[clang] [flang] [clang][flang] Support -time in both clang and flang (PR #109165)

[Tarun Prabhu via cfe-commits]

tarunprabhu wrote:

The buildkite is failing on Windows because `flang` does not print anything on Windows. It is not clear to me why this is the case. I do not have access to a windows machine on which to debug this. The test, `time.f90` has been disabled on Windows with a comment explaining why it has been disabled.

https://github.com/llvm/llvm-project/pull/109165