ENG-5986: Remove delete copy queue items in case of failure.
ENG-5690: Ugh.  Avoid having every command line tool that pulls in
VoltLogger spew server Control-C shutdown warnings on exit.
ENG-5690: Remove now-irrelvant comment
Merge pull request #1192 from VoltDB/ENG-5986

ENG-5986: Remove delete copy queue items in case of failure.
ENG-5690: Clearer naming
Merge pull request #1194 from VoltDB/eng5690fix

ENG-5690: Ugh.  Avoid having every command line tool that pulls in VoltLogger spew server Control-C shutdown warnings on exit.

r=akhanzode, jhugg
Merge branch 'master' of github.com:VoltDB/voltdb into innovation-xin-perf-steps