[clang] [flang] [llvm] [flang] Diagnose and optionally repair missing MODULE procedure prefixes (PR #220783)

[Eugene Epshteyn via cfe-commits]

https://github.com/eugeneepshteyn commented:

Also, please check that the PR description corresponds to the reality of the latest revision.

https://github.com/llvm/llvm-project/pull/220783