[Bug driver/108350] Windows: invoking gcc via symlink does not work

[i.nixman at autistici dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108350

--- Comment #23 from niXman <i.nixman at autistici dot org> ---
Created attachment 54280
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=54280&action=edit
patch

looks like I have finished!

boostrapped successfully as x86_64-mingw-w64.


@Bill Zissimopoulos, @Jonathan Wakely 

could you please review the patch?