MFH: r361698

Add dependency on pkg-config when GTK2 is on.

PR:		189138
Approved by:	maintainer timeout (74 days)

Approved by:	portmgr (miwi)
MFH: r361678

Add entry for mail/postfixadmin.

PR:		189248

Approved by:	portmgr (miwi)
MFH: r361679

- Update to 2.3.7, which contains a security fix.
- Support staging.

PR:		189248
Submitted by:	Lukasz Wasikowski <lukasz@wasikowski.net>
Approved by:	maintainer timeout (72 days)
Security:	ff98087f-0a8f-11e4-b00b-5453ed2e2b49

Approved by:	portmgr (miwi)
Make sysutils/pstree operable in jailed environment.

(cherry picked from commit 0aa00da618ffa2bc5b4c4f8b89be22b9df2e9936)
Fixed replacement of $(PGBOUNCER_RUNDIR) in files/pgbouncer.in