llvm-windres handling of unescaped quotes broke building xz

[mstorsjo]

The recent change (in 17.x) for llvm-windres handling of unescaped quotes in 0f4c6b1 (which in itself fixed one aspect of #57334) instead broke use of llvm-windres in building xz (an llvm-windres specific workaround in tukaani-project/xz@6b117d3, which worked before no longer works with the current llvm-windres).

We shouldn't be trading one bug for another, as the change from 0f4c6b1 is correct in itself (making llvm-windres behaviour closer to GNU windres), we can implement the GNU windres flag --use-temp-file properly, which should allow the GNU windres codepath in xz to work for llvm-windres as well.

A "fix" for this issue is up at https://reviews.llvm.org/D159223 - but to properly take that fix into use, xz will need to remove its llvm-windres specific handling.

[mstorsjo]

/cherry-pick 2bcc0fd

The implementation of --use-temp-file in that commit should provide a way forward for xz to use llvm-windres with the same parameters as they use for GNU windres.

[llvmbot]

/branch llvm/llvm-project-release-prs/issue65122

[llvmbot]

/pull-request llvm/llvm-project-release-prs#681