gcc: same patches for all gccs with shared sources

* different patching on same sources caused race contition [1]
* build tested from scratch

[1] http://lists.linuxtogo.org/pipermail/openembedded-core/2012-February/018296.html



Signed-off-by: Andreas Müller <schnitzeltony@googlemail.com>
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>