xed_mbuild.py: don't spew all tests to stdout when any fail
xed_mbuild.py: don't spew all tests to stdout when any fail

Change-Id: I6e83f6a4be665fcd7c00165f10fb6ae2d0dcb0aa
(cherry picked from commit 1200a3084e49b25fb1d5b51fbb90daa04324ccd3)

intelxed/xed,intelxed/xed,intelxed/xed,intelxed/xed