chore: remove bindgen, replace with hand-rolled FFI bindings

Replace the bindgen-generated bindings.rs with a hand-written lib.rs.
The bindgen build dependency is removed.

The hand-rolled bindings are verified against bindgen output and match
the types. Layout assertions enforce ABI correctness for three structs
passed by value across the FFI boundary at compile time.

Unnecessary derives (Debug, Copy, Clone) are removed from all types.

Cargo-minimal.lock and Cargo-recent.lock have been updated to remove
bindgen dependency.

libbitcoinkernel-sys/CHANGELOG.md updated to reflect bindgen removal.

Author: alexanderwiederin

Cargo-minimal.lock

@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "aho-corasick"
-version = "0.7.18"
+version = "0.7.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e37cfd5e7657ada45f742d6e99ca5788580b5c529dc78faf11ece6dc702656f"
+checksum = "58fb5e95d83b38284460a5fda7d6470aa0b8844d283a0b614b8535e880800d2d"
 dependencies = [
  "memchr",
 ]
@@ -86,26 +86,6 @@ version = "0.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f92b72b8f03128773278bf74418b9205f3d2a12c39a61f92395f47af390c32bf"
 
-[[package]]
-name = "bindgen"
-version = "0.72.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4f72209734318d0b619a5e0f5129918b848c416e122a3c4ce054e03cb87b726f"
-dependencies = [
- "bitflags",
- "cexpr",
- "clang-sys",
- "itertools",
- "log",
- "prettyplease",
- "proc-macro2",
- "quote 1.0.25",
- "regex",
- "rustc-hash",
- "shlex",
- "syn 2.0.16",
-]
-
 [[package]]
 name = "bitcoin"
 version = "0.31.0"
@@ -161,12 +141,6 @@ dependencies = [
  "log",
 ]
 
-[[package]]
-name = "bitflags"
-version = "2.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "24a6904aef64d73cf10ab17ebace7befb918b82164785cb89907993be7f83813"
-
 [[package]]
 name = "cc"
 version = "1.2.0"
@@ -176,32 +150,12 @@ dependencies = [
  "shlex",
 ]
 
-[[package]]
-name = "cexpr"
-version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6fac387a98bb7c37292057cffc56d62ecb629900026402633ae9160df93a8766"
-dependencies = [
- "nom",
-]
-
 [[package]]
 name = "cfg-if"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d4c819a1287eb618df47cc647173c5c4c66ba19d888a6e50d605672aed3140de"
 
-[[package]]
-name = "clang-sys"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5cb92721cb37482245ed88428f72253ce422b3b4ee169c70a0642521bb5db4cc"
-dependencies = [
- "glob",
- "libc",
- "libloading",
-]
-
 [[package]]
 name = "colorchoice"
 version = "1.0.0"
@@ -215,7 +169,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "df89dd0d075dea5cc5fdd6d5df6b8a61172a710b3efac1d6bdb9dd8b78f82c1a"
 dependencies = [
  "proc-macro2",
- "quote 1.0.25",
+ "quote 1.0.0",
  "syn 1.0.0",
 ]
 
@@ -225,12 +179,6 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5edd69c67b2f8e0911629b7e6b8a34cb3956613cd7c6e6414966dee349c2db4f"
 
-[[package]]
-name = "either"
-version = "1.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5845bf77d497f79416df39462df26d4a8b71dd6440246848ee63709476dbb9a6"
-
 [[package]]
 name = "env_filter"
 version = "0.1.0"
@@ -266,12 +214,6 @@ dependencies = [
  "silentpayments",
 ]
 
-[[package]]
-name = "glob"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9b919933a397b79c37e33b77bb2aa3dc8eb6e165ad809e58ff75bc7db2e34574"
-
 [[package]]
 name = "hex"
 version = "0.4.0"
@@ -296,35 +238,25 @@ version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b9b6c53306532d3c8e8087b44e6580e10db51a023cf9b433cea2ac38066b92da"
 
-[[package]]
-name = "itertools"
-version = "0.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "37d572918e350e82412fe766d24b15e6682fb2ed2bbe018280caa810397cb319"
-dependencies = [
- "either",
-]
-
 [[package]]
 name = "itoa"
 version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "91fd9dc2c587067de817fec4ad355e3818c3d893a78cab32a0a474c7a15bb8d5"
 
+[[package]]
+name = "lazy_static"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c8f31047daa365f19be14b47c29df4f7c3b581832407daabe6ae77397619237d"
+
 [[package]]
 name = "libbitcoinkernel-sys"
 version = "0.2.0"
 dependencies = [
- "bindgen",
  "cc",
 ]
 
-[[package]]
-name = "libc"
-version = "0.2.39"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f54263ad99207254cf58b5f701ecb432c717445ea2ee8af387334bdd1a03fdff"
-
 [[package]]
 name = "libfuzzer-sys"
 version = "0.4.0"
@@ -335,15 +267,6 @@ dependencies = [
  "cc",
 ]
 
-[[package]]
-name = "libloading"
-version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2c979a19ffb457f0273965c333053f3d586bf759bf7b683fbebc37f9a9ebedc4"
-dependencies = [
- "winapi",
-]
-
 [[package]]
 name = "log"
 version = "0.4.8"
@@ -355,50 +278,23 @@ dependencies = [
 
 [[package]]
 name = "memchr"
-version = "2.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b16bd47d9e329435e309c58469fe0791c2d0d1ba96ec0954152a5ae2b04387dc"
-
-[[package]]
-name = "minimal-lexical"
-version = "0.1.2"
+version = "2.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6595bb28ed34f43c3fe088e48f6cfb2e033cab45f25a5384d5fdf564fbc8c4b2"
-
-[[package]]
-name = "nom"
-version = "7.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7ffd9d26838a953b4af82cbeb9f1592c6798916983959be223a7124e992742c1"
-dependencies = [
- "memchr",
- "minimal-lexical",
- "version_check",
-]
+checksum = "88579771288728879b57485cc7d6b07d648c9f0141eb955f8ab7f9d45394468e"
 
 [[package]]
 name = "num-traits"
 version = "0.1.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "51eab148f171aefad295f8cece636fc488b9b392ef544da31ea4b8ef6b9e9c39"
 
-[[package]]
-name = "prettyplease"
-version = "0.2.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "43ded2b5b204571f065ab8540367d738dfe1b3606ab9eb669dcfb5e7a3a07501"
-dependencies = [
- "proc-macro2",
- "syn 2.0.16",
-]
-
 [[package]]
 name = "proc-macro2"
-version = "1.0.80"
+version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a56dea16b0a29e94408b9aa5e2940a4eedbd128a1ba20e8f7ae60fd3d465af0e"
+checksum = "19f287c234c9b2d0308d692dee5c449c1a171167a6f8150f7cf2a49d8fd96967"
 dependencies = [
- "unicode-ident",
+ "unicode-xid 0.2.0",
 ]
 
 [[package]]
@@ -409,9 +305,9 @@ checksum = "9f0fc799e40f2a2c2be239825b30b686f1bd1d2e0e3d5e943b14c1380db49acf"
 
 [[package]]
 name = "quote"
-version = "1.0.25"
+version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5308e8208729c3e1504a6cfad0d5daacc4614c9a2e65d1ea312a34b5cb00fe84"
+checksum = "7ab938ebe6f1c82426b5fb82eaf10c3e3028c53deaa3fbe38f5904b37cf4d767"
 dependencies = [
  "proc-macro2",
 ]
@@ -433,20 +329,21 @@ checksum = "34cf66eb183df1c5876e2dcf6b13d57340741e8dc255b48e40a26de954d06ae7"
 
 [[package]]
 name = "regex"
-version = "1.5.3"
+version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ce5f1ceb7f74abbce32601642fcf8e8508a8a8991e0621c7d750295b9095702b"
+checksum = "fc98360d9e6ad383647702acc90f80b0582eac3ea577ab47d96325d3575de908"
 dependencies = [
  "aho-corasick",
  "memchr",
  "regex-syntax",
+ "thread_local",
 ]
 
 [[package]]
 name = "regex-syntax"
-version = "0.6.25"
+version = "0.6.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f497285884f3fcff424ffc933e56d7cbca511def0c9831a7f9b5f6153e3cc89b"
+checksum = "11a7e20d1cce64ef2fed88b66d347f88bd9babb82845b2b858f3edbf59a4f716"
 
 [[package]]
 name = "rust-bitcoinkernel-fuzz"
@@ -457,12 +354,6 @@ dependencies = [
  "libfuzzer-sys",
 ]
 
-[[package]]
-name = "rustc-hash"
-version = "2.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c7fb8039b3032c191086b10f11f319a6e99e1e82889c5cc6046f515c9db1d497"
-
 [[package]]
 name = "secp256k1"
 version = "0.28.1"
@@ -564,21 +455,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9f8c8eab7d9f493cd89d4068085651d81ac7d39c56eb64f7158ea514b156e280"
 dependencies = [
  "proc-macro2",
- "quote 1.0.25",
+ "quote 1.0.0",
  "unicode-xid 0.2.0",
 ]
 
-[[package]]
-name = "syn"
-version = "2.0.16"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a6f671d4b5ffdb8eadec19c0ae67fe2639df8684bd7bc4b83d986b8db549cf01"
-dependencies = [
- "proc-macro2",
- "quote 1.0.25",
- "unicode-ident",
-]
-
 [[package]]
 name = "synom"
 version = "0.11.0"
@@ -589,10 +469,13 @@ dependencies = [
 ]
 
 [[package]]
-name = "unicode-ident"
-version = "1.0.0"
+name = "thread_local"
+version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d22af068fba1eb5edcb4aea19d382b2a3deb4c8f9d475c589b6ada9e0fd493ee"
+checksum = "c6b53e329000edc2b34dbe8545fd20e55a333362d0a321909685a19bd28c3f1b"
+dependencies = [
+ "lazy_static",
+]
 
 [[package]]
 name = "unicode-xid"
@@ -612,34 +495,6 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "711b9620af191e0cdc7468a8d14e709c3dcdb115b36f838e601583af800a370a"
 
-[[package]]
-name = "version_check"
-version = "0.9.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "45d3d553fd9413fffe7147a20171d640eda0ad4c070acd7d0c885a21bcd2e8b7"
-
-[[package]]
-name = "winapi"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b3ad91d846a4a5342c1fb7008d26124ee6cf94a3953751618577295373b32117"
-dependencies = [
- "winapi-i686-pc-windows-gnu",
- "winapi-x86_64-pc-windows-gnu",
-]
-
-[[package]]
-name = "winapi-i686-pc-windows-gnu"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a16a8e2ebfc883e2b1771c6482b1fb3c6831eab289ba391619a2d93a7356220f"
-
-[[package]]
-name = "winapi-x86_64-pc-windows-gnu"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ca29cb03c8ceaf20f8224a18a530938305e9872b1478ea24ff44b4f503a1d1d"
-
 [[package]]
 name = "windows-sys"
 version = "0.48.0"