(Only the first 10 of 11 ports in this commit are shown above. )
- Update to 1.6.0.
- Reset maintainership. See ports/164941.
- Make it as amd64 and i386 only. Other architectures needs porting.
- Reduce Makefile headers, add licenses, and convert to optionsNG.
- Add an option to build with native JDK. When it is not selected, GCJ is
used instead. Turned on by default.