implemented ldap_open_defconn() to centralize default connection
opening in open.c.  Used by ldap_open, kbind, and send_initial_request().

* all others: Added DESTDIR support

broken objectclass and attributetype definitions where the OID is
missing.  The implementation of OIDmacros was making this impossible.
This change tries to restore the old behaviour, while preserving the
new feature.  Note that part of the restored behaviour lets OIDs that
are not in the numericoid format get through.  We may lose this, but
then we need to fix some of the sample provided schemas, notably
pilot.schema.

Add JPEG syntax to those known.

Add substitution of WRAP_LIBS

  libwrap was a dynamic library). Added -lwrap to new subst var WRAP_LIBS
  so we have more control over where it get's linked (dynamic libwrap
  causes problems when we link to programs that don't define certains
  globals that libwrap expects).
* build/top.mk: Added placeholder for WRAP_LIBS subst
* servers/slapd/Makefile.in: Added $(WRAP_LIBS) to the slapd and sslapd
  link command line specifically so it doesn't get thrown in with the rest
  of the LIBS.
* configure: rebuilt

to go through and find/fix buffer overflows and such.

If not available, LDBM uses big mutex and BDB2 is disabled.
Should add BerkeleyDB version detection...

Insert reference to ITS webpage

and back-ldbm are preserved, they only use the up-cased DNs. back-passwd
uses the mixed-case DN. All others are using mixed-case DN, may need more
fixing.

Let oc_check_allowed grok things like userCertificate;binary
oc_check_required should be fixed too.

Let at_find find the AttributeType that matches a given AttributeDescription.
Useful to deal with things like userCertificate;binary.

Add missing paren.