Changes to support testing from database only without first loading cubes into the cache.
repackaged test.
- Added more tests to ensure switching sys.classpath (and calling clearCache(appid)) causes new code to be recompiled
- minor improvement CellInfo parsing related to method support
- added 'Delta' as a type that is available to expression cells.
Merge branch 'master' of https://github.com/jdereg/n-cube