CowDb release 3.3.2

release 3.3.2:
Common has been folded into the CowDb jar file.

DefaultConfiguration class has been renamed to DatabaseConfiguration and, if passed the name of a database file, tries loading a .cfg properties file by the same name. Failing that, it attempts to load the default.cfg file.

DbProcessor instances were not added to a global map, resulting in duplicates for the same database and also lost file handles.

As a close operation needs to wait for current processing to complete (it is graceful), additional logic was needed to prevent a db from being opened while it was in process of being closed.