Auto merge of #25134 - alexcrichton:fix-issue-25072-for-realsies, r=brson

Turns out that a verbatim path was leaking through to gcc via the PATH
environment variable (pointing to the bundled gcc provided by the main
distribution) which was wreaking havoc when gcc itself was run. The fix here is
to just stop passing verbatim paths down by adding more liberal uses of
`fix_windows_verbatim_for_gcc`.

Closes #25072

diff --cc src/librustc_trans/back/link.rs
Simple merge