MFH: r362181

Security update to 4.2.6.

Security advisories will eventually be published at
http://www.phpmyadmin.net/home_page/security/

Security:	3f09ca29-0e48-11e4-b17a-6805ca0b3d42
Approved by:	portmgr
MFH: r362158

- Import bugfix from upstream [1]
- While here, remove check for unsupported release

PR:		191921 [1]
Submitted by:	jiashiun@gmail.com

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
Revert "Define and use "our_gid" variable."