[clang] Bypass alignment option based on architecture features instead of command-line flags (PR #134099)

[Victor Campos via cfe-commits]

https://github.com/vhscampos commented:

Review of the commit msg:
- Add some categories to the title, like [Clang][ARM]
- The new solution still uses the command-line options (inside the function `getARMTargetFeatures`). However it also takes into account the architecture in order to determine the alignment access policy.
- I think "bypass" is the wrong term. One correct term I believe could be "pass along", as in "Clang passes along the options to the multilib system".

https://github.com/llvm/llvm-project/pull/134099