[clang] [Clang][X86] Introduce Clang ABI Gate for MSVC alignment (PR #210305)

[Hans Wennborg via cfe-commits]

zmodem wrote:

IIRC we haven't been gating MSVC-compat ABI changes behind -fclang-abi-compat in the past. Do you have object files where this actually matters?

https://github.com/llvm/llvm-project/pull/210305