o Fixed a NPE if the pwdGraceAuthNLimit is set to 0 with an expired pwdAge 
o Added some more protections against NPE in PP code
o Added some tests for PP
o Renamed a class (type)
o Renamed two methods (typoes too, I guess)


git-svn-id: https://svn.apache.org/repos/asf/directory/shared/trunk@1467813 13f79535-47bb-0310-9956-ffa450edef68