glibc: update default cross-compile version to 2.19
This number tracks the glibc version in the oldest still-active LTS
version of Debian, which is Jessie, extended LTS expiring in June 2022,
at which point this number can be bumped again.
1530203c80Andrew Kelley committed on 12/16/2021, 10:01:13 AMparentc9863c0