[clang] [LinkerWrapper] Fix -fsave-optimization-record default file (PR #149003)

[Joseph Huber via cfe-commits]

jhuber6 wrote:

> So we = clang-linker-wrapper? Yes, we could. But I figured this problem might prove not to be a one-off, and -foutput-file-base is a more general solution that could be used elsewhere.

I'm just hesitant to add a new flag that's used just for this (Though I've done similar hacks in the past.) I'll add some more clang people to get their opinion.

https://github.com/llvm/llvm-project/pull/149003