Log Message:
devel/xulrunner10: DRAGONFLY_CCVER=gcc44

Don't bother to patch an older xulrunner to work on gcc47 on DragonFly.
Unfortunately, xulrunner 10 breaks for other reasons right now, but
when those gets fixed it needs this directive to build for systems that
have gcc47 requested in the makefile.

Also affects Firefox 10 and Thunderbird 10, of course.