Complete JRockit logs enhancement #45

Hi Jorg, I have committed the following to my repository:
1. My latest JRockit 1.5 enhancements for issue #45
2. Some bug fixes for JRockit 1.6 gc flags parse issues that I encountered during tests.
3. Added all the sample JRockit GC logs that I used for tests to /test/resources
4. Merged code from your latest master (my upstream)

Please verify that I have done this right.