enable default visibility of symbols in the release build
Merge branch 'master' into ENG-4644-logFatal
ENG-4644 Spot fix to loadCatalog and updateCatalog to handle FatalException via crashVoltDB vs. the silence.
Merge pull request #493 from VoltDB/ENG-4644-logFatalReal

ENG-4644 Spot fix to loadCatalog and updateCatalog to handle FatalException via crashVoltDB vs. the silence.