Bug 27152: Use mozilla/fxc2.git for the fxc2 repository

projects/fxc2/config

 # vim: filetype=yaml sw=2
 version: '[% c("abbrev") %]'
-git_url: https://github.com/azadi/fxc2.git
-git_hash: 079f5c7b9f6ea0b7e5504bb53abf8709cc92835d
+git_url: https://github.com/mozilla/fxc2.git
+git_hash: 0b800f3e41ed087df6f51f120165f3ccc71cc27c
 filename: '[% project %]-[% c("version") %]-[% c("var/osname") %]-[% c("var/build_id") %].tar.gz'
 
 var: