[clang] [flang] [llvm] [openmp] [flang][driver] rename flang-new to flang (PR #110023)

[Kiran Chandramohan via cfe-commits]

https://github.com/kiranchandramohan approved this pull request.

LGTM. Thanks for adding the warning about OpenMP.

Please ask in the Flang community call tomorrow and in the discourse post before you submit.

https://github.com/llvm/llvm-project/pull/110023