ENG-6611: Use original IMPORT CLASS lines rather than exploding wildcard patterns into every individual class
ENG-6611: Ignore IMPORT CLASS statements in the DDL when recompiling
catalogs within the cluster.  Add tests for both auto-catalog-upgrade
and adhoc DDL.
Merge pull request #1598 from VoltDB/eng6611-fixrecompileswithimportclass2

Eng6611 fixrecompileswithimportclass2