Final commit before the great 'stripdown'.  Used clover to determine coverage and added tests as necessary.

Moved some tests from EvaluationTests into OperatorTests.
Fleshed out OperatorTests to verify type promotions for mixed type operands.

starting to sort out like/matches.  Matches is the java regex related one.  Like is the SQL related one.  But the spring .net 'like' doesn't seem to be the same as the SQL doc I found for like...