Updating ITFoundation to include updates spurred by Haven development.

Updating ITFoundation to include updates spurred by Haven development.

ITUUID function for easy generation of new UUIDs,
ITThreadChild and ITThreadParent protocols for threading based on Subjugator implementation,
ITSharedController for simple implementation of a controller that maintains a shared instance (used by ITApplicationController in ITKit),
ITSQLite3Database wraps the sqlite3 C API nicely, though more work could be done,
ITDebug adds more functions for logging,
ITCategory-NSString adds MD5 and SHA1 hashing, around the new ITCategory-NSData methods,
and ITCategory-NSData adds MD5 and SHA1 hashing, and a hexadecimalRepresentation method that goes well with the hashes.