[clang] Reland [Clang][Cmake] fix libtool duplicate member name warnings (PR #133850)

[Nikita Popov via cfe-commits]

nikic wrote:

I'm still somewhat confused about why that one file in particular is problematic, but I guess if this works it's fine.

Would making these OBJECT instead of STATIC libraries avoid the issue perhaps?

https://github.com/llvm/llvm-project/pull/133850