Revision 303378

- update firefox and thunderbird to 15.0
- update firefox-esr, thunderbird-esr, linux-thunderbird and linux-firefox to 10.0.7
- update seamonkey and linux-seamonkey to 2.12
- update nss to 3.13.6
- update bsdipc code (posix_spawn, SysV shared memory)
- rename patches to easily track those not (yet) submitted upstream
- reduce package size, except for www/libxul[1]
- restore default objdir to what it was in 13.0
- fix mail/enigmail after thunderbird build changes
- don't accidentally pick up headers from installed ports[3]
- add support for PREFIX != LOCALBASE to Makefile.webplugins [4]
- document vulnerabilities in vuln.xml
- *miscellaneous cleanups and fixups*

Obtained from:	OpenBSD ports[1]
PR:		ports/159831, ports/160933, ports/170467[3], ports/170236 [4]
Submitted by:	avilla [4]
In collaboration with:	Jan Beich <jbeich@tormail.net> Who did most of the hard
			work.