ENG-4133: Prettier and less redundant logging on update catalog
ENG-4133: Tweak the logging of UACs.
Fix a bug Izzy found in review.
Add an extra tuplecount check during schema change (not technically part of ENG-4133).
Merge remote-tracking branch 'origin/master' into ENG-4133-uac-log
ENG-4133: Fix stupid C++ warning.
Merge pull request #455 from VoltDB/ENG-4133-uac-log

ENG-4133: Prettier and less redundant logging on update catalog