Reconfigured HsqldbJobStorage class to support MySql, Oracle, Postgresql, MSSql, and DB2 databases in addition to Hsqldb, renamed HsqldbJobStorage GenericJobStorage. This new class also serves the function of AutoHsqldbStorage, which has been removed.
Two new commands, --meta-username and --meta-password have been added to connect to metastore databases that require a username and password.
Added an enum class JdbcDrivers that holds Jdbc connection information.
Added two testClasses, MetaConnectIncrementalImportTest and JobToolTest, and modified TestSavedJobs (now SavedJobsTest) to test with all supported database services.