[Bug gcov-profile/105063] [GCOV] Ability to map .gcda paths

[vit9696 at protonmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105063

--- Comment #14 from vit9696 <vit9696 at protonmail dot com> ---
I have just tested this patch after rebasing it on 10.3.x branch, and can
confirm it works as intended. Thank you!