fixed build with changed install directories (defaults/pref -> defaults/preferences)
enabled GStreamer support on 12.1 and newer
made toolkit packaging errors non-fatal (as they are expected with system NSPR and NSS anyway)
xulrunner
+/usr/lib(64)?/xulrunner-.*
+/etc/gre.d/.*
requires "mozilla-js-<targettype>"
mozilla-js
xulrunner-translations-common
+/usr/lib(64)?/xulrunner-.*
requires "xulrunner-<targettype> = <version>"
supplements "packageand(xulrunner-translations-common:xulrunner-<targettype>)"
xulrunner-translations-other
+/usr/lib(64)?/xulrunner-.*
requires "xulrunner-<targettype> = <version>"
supplements "packageand(xulrunner-translations-other:xulrunner-<targettype>)"