Enhance run-tests.sh to skip selected executable

The presence of BROKEN_RUN used to indicate that the test
is known to fail at run-time.  One test may produce multiple
executable, but not all can run correctly.  Enhance to skip
executable listed in BROKEN_RUN, or all if BROKEN_RUN is a
zero-lengthed file (original behavior)

Change-Id: Iac72299019e7d5813f91746db2efe22ba64467fc
1 file changed