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.
Revert "ENG-5711.  Don't recompile the mockjars in pro any more."
Dangit.  VEM doesn't read old catalogs until ENG-5968 is fixed.

This reverts commit fd5f9fd74493823642b1c4ff51b9a5e8f185cfcd.