[coreboot] Patch merged into coreboot/master: 7e20b87 Allow XGCCPATH to be set on the make command line.

the following patch was just integrated into master:
commit 7e20b87c3ed60a8f3f4ac93c245c2e46e08b5c4e
Author: Marc Jones 
Date:   Fri Oct 7 17:20:30 2011 -0600

Allow XGCCPATH to be set on the make command line.

The xgcc toolchain may be moved by the user and passed in on the commandline. Updates the Makefile and the xcompile script.

Change-Id: I05797b2cabce39bdd7868c2515f30d34043fc8cc
    Signed-off-by: Marc Jones

Reviewed-By: Patrick Georgi  at Sun Oct 23 18:55:26 2011, giving +2
See http://review.coreboot.org/318 for details.

-gerrit