- BDB context csn codes moved to a separate function in back-bdb/ctxcsn.c

- currenty works for refreshOnly mode of LDAP Sync
- Context CSN for add / modify is implemented
- code for delete / modrdn / refreshAndPersist will be soon committed

Currently discovered via a "feature", but should use a control.
Start of a control made, but needs to be better integrated (with
auto use in ldapmodify(1)).

	 slap_mods_opattrs(), slap_mods_check(), slap_mods2entry()

preoperation plugin has removed all modifications and
thus there are none to pass to the backend.

Accept SSF as a valid parameter block value.

Fix completely broken slapi_access_allowed()

- conf file processing udpate
- misc updates

- add "updatedn" to the replication specification
- return referral to update to the slave server

order to prevent the operation from being passed to the backend. It
need only return a non-zero error code.

re-add objectClass pretty routines

modify request becomes a NOOP for the front-end in this case.

consolidated into the Operation structure. All reply parameters
are consolidated into the new SlapReply structure. Most operations
now have identical call signatures... Changes are not #ifdef'd,
revert to -r NO_SLAP_OP_BLOCKS if necessary to back out.

schemes. Declarations in lutil.h require lutil.h never be included before
lber.h, always after.

	schema engine updated (but not schema routines so things don't run yet)
	nvalues mostly populated, enough for tests 0-2 to pass
	schema routines needs lots of work
	modify/mods codes needs lots of work