Extended Helgrind Suppressions to more TBB and Framework internals

Added more suppressions for helgrind to we do not get false positives from thread-safe non-locking structures.
Properly handle built in customise additions

The previous change to ConfigBuilder added the ability to have multiple
customise commands from the command line. However, there were two
'builtin' customise commands which were not updated to add themselves
using the new mechanism. This commit fixes that oversite.
Merge pull request #1946 from Dr15Jones/handleBuiltInCustomise

Misc fixes -- Properly handle built in customise additions
Merge pull request #1945 from Dr15Jones/extendHelgrindSuppressions

Tools fixes -- Extended Helgrind Suppressions to more TBB and Framework internals
Merge remote branch 'origin/CMSSW_7_0_X' into CMSSW_7_0_X