ENG-5135 Allow live widen of columns used in expression matviews. Cleanup AbstractExpression from JSON.
Merge branch 'master' into ENG-5135-live-expr-matview
Merge branch 'ENG-5135-prep' into ENG-5135-live-expr-matview
Merge branch 'master' into ENG-5135-live-expr-matview
Merge branch 'ENG-5135-prep' into ENG-5135-live-expr-matview
Merge remote-tracking branch 'origin/ENG-5135-live-expr-matview' into ENG-5135-live-expr-matview
Merge branch 'master' into ENG-5135-live-expr-matview
Fix silly IndexScan Explain regression.
Merge pull request #778 from VoltDB/ENG-5135-prep

Update regression-config.py
Merge remote-tracking branch 'origin/ENG-5135-prep' into ENG-5135-live-expr-matview
Merge branch 'ENG-5135-prep' into ENG-5135-live-expr-matview
Merge remote-tracking branch 'origin/ENG-5135-prep' into ENG-5135-live-expr-matview
Merge remote-tracking branch 'origin/release-3.7' into ENG-5135-live-expr-matview
ENG-5135-live-expr-matview patch bad merge
Update AbstractExpression.java

Slightly re-order and javadoc the new methods.
Update AbstractExpression.java

delete duplicated functions
Merge remote-tracking branch 'origin/release-3.7' into ENG-5135-live-expr-matview
Simplified live expr matview support re:r=xjia.
Merge remote-tracking branch 'origin/release-3.7' into ENG-5135-live-expr-matview

Conflicts:
	src/frontend/org/voltdb/plannodes/AggregatePlanNode.java
Merge pull request #806 from VoltDB/ENG-5135-live-expr-matview

Eng 5135 live expr matview