Merge pull request #678 from rust-lang/remove-embed-lto-bitcode #1245

Job	Run time
build (libgccjit_without_int128.so, master-without-128bit-integers)	9m 3s
build (libgccjit.so, master)	9m 45s
build (libgccjit12.so, gcc12, --no-default-features, TEST_FLAGS='-Cpanic=abort -Zpanic-abort-test...	2m 41s
success_failures	2s
	21m 31s

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