Patch merged into coreboot/master: buildgcc: Don't request that optional tools be installed

the following patch was just integrated into master:
commit e396317244191df506bb2b566f91a518b639f213
Author: Martin Roth 
Date:   Wed Jan 6 13:54:32 2016 -0700

buildgcc: Don't request that optional tools be installed

Previously, when we tested for g++ and two different versions of clang,
    if the earlier versions were not found, buildgcc would still request
    that they be installed.  This obviously isn't needed, and isn't the
    desired outcome.
    Now, if one of the first tests fails, nothing gets printed.  If all
    the tests fail, it tells you to install either g++ or clang.

Change-Id: I71359f59c4c6bee3c3c55e4e6105f11e6ca51527
    Signed-off-by: Martin Roth 
    Reviewed-on: https://review.coreboot.org/12852
    Tested-by: build bot (Jenkins)
    Reviewed-by: Patrick Georgi

See https://review.coreboot.org/12852 for details.

-gerrit