Rollup merge of #153184 - bjorn3:split_crate_info_out_of_codegen_results, r=nnethercote

Replace CodegenResults with CompiledModules

This is already CodegenResults without CrateInfo. The driver can calculate the CrateInfo and pass it by-ref to the backend. Using CompiledModules makes it a bit easier to move some other things out of the backend as will be necessary for moving LTO to the link phase.

Helps with rust-lang/compiler-team#908

Author: JonathanBrouwer