javadoc: link to core javadoc
javadoc: link to core javadoc

The core javadoc is no longer packaged in the 
other javadoc packages. It is linked to.

The zip files are also packaged with a base folder
of the release names to allow all the zips to be 
unzipped into the same folder.
osgi/osgi,osgi/osgi,osgi/osgi,osgi/osgi,osgi/osgi,osgi/osgi,osgi/osgi,osgi/osgi