streamline debug level logging

The debug level logging in JBossTS is unnecessarily complex. DebugLevel values other than 0xffffffff ('ON') and 0x00000000 ('OFF'), FacilityCode and VisibilityLevel filters are largely unused. In practice the use case for debug level logging is for customers to pass trace information back to support. In such cases we inevitably want everything and will filter it later with grep according to the case at hand. The additional verbosity that DebugLevel, FacilityCode and VisibilityLevel add to the codebase is unwarranted. These classes should be nuked. Removing this added complexity will also help make the transition to the new common JBoss logging system (TAG-3) easier.