Add release notes for 15.0.1.0 & 15.0.2.0
Use JEP-322 Time-Based Versioning so we can handle a future 11.0.9.1-like release correctly.
Still use 15.0.x rather than 15.0.x.0 for file naming, as the trailing zero is omitted from tags.
Cleanup debug package descriptions and version number placement.
Remove unused patch files.
- update to jdk 14+36 ea build
- remove JDK-8224851 patch, as OpenJDK 14 already contains it
- removed pack200 and unpack200 binaries, slaves, manpages and libunpack.so library
- added listings for jpackage binary, manpages and added slave records to alternatives
Replace pr3755 patch with pr3782 from icedtea14
Replace all occurences in the generate_source_tarball.sh script.
Mark the builds as ga, as OpenJDK 14 was released today