removes the need for LDIF conversion. It will make TurboGears direct
code faster, but should keep xmlrpc about the same speed.
The patch also swaps out ldap.cidict for the IPA CIDict class. IPA code
should only use the CIDict class now.
Create separate object for Users and Groups (using same base class)
Check for uniqueness before adding new users and groups
Remove user_container from everything but add operations
Abstract out a number of functions that are common across users and groups
Make sure all strings passed in to be in a filter are checked
Add new error message: No modifications specified
