Insert reference to ITS webpage

	-C chase with prompting
	-CC chase without prompting
	-R don't chase
with defaults dependent upon authentication method used.
rebind callback also needs to be extended to support SASL and
provide information for prompting purposes.  Good intro project.

ldif updates (add URL description).

Remove man pages for old ldbm tools.

Remove server side controls.
Add Digest-MD5 project.