[coreboot] Patch merged into coreboot/master: 969cd93 buildgcc: Remove mingw32 hacks

the following patch was just integrated into master:
commit 969cd931f8461ad3ee9015f8595e5d7872f45b94
Author: Patrick Georgi 
Date:   Fri Dec 7 13:13:53 2012 +0100

buildgcc: Remove mingw32 hacks

After patching them to be more flexible, an even better approach was found:
    With this change libgcc isn't built at all on mingw32 platforms, so the
    system headers aren't necessary anymore.

Now x86_64-pc-mingw32 builds, too.

Change-Id: Ic1406588669d87aee1bcf40ff67af77f2a6ac283
    Signed-off-by: Patrick Georgi 
    Reviewed-on: http://review.coreboot.org/1985
    Tested-by: build bot (Jenkins)
    Reviewed-by: Stefan Reinauer 
    Reviewed-by: Raymond Danks

Build-Tested: build bot (Jenkins) at Fri Dec  7 15:57:00 2012, giving +1
Reviewed-By: Stefan Reinauer  at Fri Dec  7 18:57:42 2012, giving +2
See http://review.coreboot.org/1985 for details.

-gerrit