o Made the StandaloneLdapApiService class inherit from DefaultLdapCodecService in order to eliminate duplicate code
o The Cancel class now refers to the CancelRequest class internally to avoid the duplication of fields
o The PasswordModifyFactory does not set the value if it's null

git-svn-id: https://svn.apache.org/repos/asf/directory/shared/trunk@1578246 13f79535-47bb-0310-9956-ffa450edef68