Much clean up is needed.

conn->c_dn,c_ndn, Access->a_dn_pat)

	SLAP_MR_ASSERTION_SYNTAX_MATCH
	SLAP_MR_VALUE_SYNTAX_MATCH
	SLAP_MR_VALUE_SYNTAX_CONVERTED_MATCH,
add supporting evaluation macros, and update code as needed.
Misc other code cleanup included.

Includes rewriting of URLs where the DN of the referral object
and the DN of the ref attribute attribute are not the same.
Also, always returns explicit DN and scope.
Currently, back-ldbm only.  Needs to be ported to back-bdb.

   Changed AttributeDescription.{ad_cname,ad_lang} to struct berval everywhere
   Deleted ad_free() everywhere
   Added ad_mutex to init.c

The AttributeDescriptions are in a linked list hanging off of the
corresponding AttributeType.

type.  Add type to core.schema.  Not yet populated on add nor checked on modify.

types without equality matching rules.

Updated NT Project files (with Cyrus SASL library depend)

  routines, such as distinguishedNameMatch, to be sure.

SASL mech removed from backend bind callback (as SASL is managed by frontend)
Changes to some backends are untested (as I don't have all dependent
  software install)

values after delete of any value.

Don't use LDAP_OPERATIONS_ERROR for internal errors.  Use LDAP_OTHER
instead.  (more changes needed in this area)

Not hidden: "<anonymous>" modifiersname

plus these changes unhidden changes:
	remove now meaning --enable-discreteaci configure option
	fix ITS#451, slapd filters
	Add ber_bvecadd() to support above
	constify ldap_pvt_find_wildcard() and misc slapd routines
	renamed some slap.h macros
	likely broken something

basic structures for handing language tags and binary option
(but less actual code to actually support them).  Provided
for reference only.  Will not even compile.