GEOS-5054 implemented role lookup for secured LDAP servers (e.g. ActiveDirectory)
GEOS-5054 added groupAdminGroup parameter to LDAPAuthenticationProvider
Added comments
Merge pull request #232 from mbarto/geos5054

GEOS-5054, GEOS-5805 improvements for LDAPAuthenticationProvider
Merge branch 'master' of git://github.com/geoserver/geoserver