Since the new version 1.2.12 use GLIBC_2.4, it's not for linux_base-fc4
default port. Backout the previous commit, revert to version 1.2.10
and bump the PORTEPOCH.

Pointyhat to: me (bsam)
PR: 116059
Submitted by: Marcus von Appen <mva at sysfault.org>