svnclientadapter additions

This patch adds the following functionality to the svnclientadapter:

ISVNStatus[] ISVNClientAdapter.getStatus(File path, boolean descend, boolean
getAll, boolean contactServer) throws SVNClientException;

Kind ISVNStatus.getRepositoryTextStatus();

Kind ISVNStatus.getRepositoryPropStatus();

ISVNNotifyListener.logRevision(long);

SVNNodeKind.toString() (just a utility method)

They are all needed to implement a 'svn status -u' kind of funcionality.
Currently the patch fully implements these methods for the javahl client.
For the cmd client implementation I only made placeholders with TODO
comments.

Please review the patch and give a go to commit it!

Regards,
Panagiotis