1. Optionally link with libc_r to get plpython working. [1]
2. Fix kerberos build. [2]
3. There was a duplication of some declarations. [3]
PR: ports/52851
PR: ports/51080 [2]
Submitted by: Mike Meyer <mwm@mired.org> [1]
Submitted by: Gerweck <andy@tacnode.com> [2]
Pointed out by: Mike Harding <mvh@ix.netcom.com> [3]
Submitted by: Palle Girgensohn <girgen@pingpong.net> (maintainer)
21b5e839a3