[foss] GCC 12.0.0 20210721 experimental

[SAIFI]

Hi all:

gcc 12.0.0 20210721 experimental is available for download.

https://sourceforge.net/projects/strikr/files/gcc/

Thanks to the awesome folks at GCC project who continue to push the envelope 
for C++20 and beyond support.


warm regards
Saifi.