ENG-4338: WIP commit on faster catalog updates
This has most of the lazy plan loading code, but is missing a few things
Needs cache eviction and doesn't pass 100% of tests.
ENG-4338: Make cache and active plan collectiosn cleanup/evict.
Fix a stats bug too.
Merge remote-tracking branch 'origin/master' into ENG-4338-fastcatalogs
ENG-4338: Fix crash on plan eviction in EE.
ENG-4388: Make catalog strings less of a burden.
base64 encode plans rather than hex.
load sql stmts on demand.
Bump the version number to 3.2
Merge remote-tracking branch 'origin/master' into ENG-4338-fastcatalogs

Conflicts:
	src/frontend/org/voltdb/iv2/FragmentTask.java
	src/frontend/org/voltdb/iv2/SysprocFragmentTask.java
ENG-4338: Taking pmartel feedback.
ENG-4388: Whitespace fix and revert some hastily changed code after review.
Merge pull request #441 from VoltDB/ENG-4338-fastcatalogs

Eng 4338 fastcatalogs