[$] GNU C Library version 2.39

The GNU C Library (glibc)released version 2.39 on January 31, includingseveral new features. Notable highlights include new functions for spawningchild processes, support for shadow stacks on x86_64, new security features, andthe removal of libcrypt. The glibc maintainers had also hoped to includeimprovements to qsort(), which ended up not making it into thisrelease. Glibc releases are made every six months.