ENG-5711.
- Change the sed to pick up the new version string in RealVoltDB.java
- Change the regex for matching yourself (the default) to be easier to sed
ENG-5711.  Don't recompile the mockjars in pro any more.
Merge pull request #1196 from VoltDB/ENG-5711-changeversion

Eng 5711 changeversion
Version 4.2.
Merge branch 'master' of github.com:VoltDB/voltdb into innovation-xin-perf-json