Extend permutations tested in basic test, move edge cases to separate test, and add regression test for bug 1195735

Implement latch VARCHAR()- query works with good string names, but partially for string'd numbers, and not for null or cast numbers

Implement latch VARCHAR()- table structure - retain SHORTINT backwards compatibility. Passes test for b/compat

Moved randgraphproc.inc into social.test itself
Cleanup of oqgraph social tests

Adding social test suite

Added oqgraph "create attr" test as per Andrew's regression test. Fixups required before we can record results.

Updated oqgraph copyright, version and author info.