jGuard v0.52 released!

this is a minor jGuard release.
changelog:
- enhance javadoc
- fix a regexp bug on URLPermission:
before this fix, only a permission with the same name was granted.
now, the URLPermission 'implies' other URLPermission with 'similar' uris
by example:
now, 'http://foo/bar/' implies 'http://foo/bar/postAComment/stuff'

have fun,
charles.