Do not taint the Apache build with _XPG4_2, which breaks 3rd party
modules like Passenger. Instead, apply _XPG6 to mod_proxy_fdpass only
(where it's needed); Apache build defaults to C99 anyway.
Enable SunOS platforms, fix assumed /usr/ccs paths
vlc needs _XOPEN_SOURCE>=400 on SunOS
Merge branch 'joyent/feature/miscfix/2012Q4' into pkgsrc_2012Q4
Update joyent and wip modules