Hello,

# TCWG CI

- Changed tcwg_gnu-build.sh to apply GDB patch adding '--with-additional-debug-dirs' option, and ABE's gdb.conf to use it. Also changed both to add '--prefix /usr' option to GDB's configure. Both changes to fix ld.so debug info issues in GDB testsuite runs on armhf. - Testing changes to validate_failures.py and jenkins-scripts to handle empty gdb.sum. - Reviewed a few Gerrit requests.