Fix type erasure warnings in lift-json tests.
Fix postfix op warning in lift-util tests.
Fix reflective access warning in lift-util tests.
Fix exhaustive match warning in lift-util tests.
Fix deprecation warnings in lift-util tests.
Fix reflective access warnings in lift-webkit tests.
erasure->runtimeClass in lift-webkit tests.
Fix wildcard exception matchers in lift-mapper tests.
Fix ne comparison warnings in lift-mapper tests.

In MapperSpec, because the providers list was inferred to
have type List[DbProviders.H2MemoryProvider], comparisons
to avoid testing certain things against MySql and other
providers were causing warnings.

We fix this by being explicit about the type of the providers list.
This is important because the spec is structured so that you
can just add other providers if you have them set up properly
and test mapper as needed against those providers.
Import reflectiveCalls as needed in lift-json-scalaz tests.
Import reflectiveCalls as needed in lift-json-scalaz7 tests.
Fix exhaustive match warning in lift-markdown tests.
Merge branch 'deprecator-exterminator' into testing-one-two-three
Merge pull request #1542 from lift/testing-one-two-three

Testing 1-2-3: Fix test warnings in all but lift-mongodb and lift-mongodb-record