Add -n option to slapd

implemented in SLAPD_SCHEMA_NOT_COMPAT

Modify tests to use -h "ldap://localhost:port/" instead of -p port.

  export so we don't clobber anything the user already has set

  with the shared libraries instead of static, defaults to no
* build/lib-shared.mk: if LINK_BINS_DYNAMIC is set we create a symlink to
  the .so and .so.# file along with the .a and .la files
* build/lib.mk: make sure the above links get removed on clean target
* build/top.mk: add define for LINK_BINS_DYNAMIC
* tests/scripts/defines.sh: add export for LD_LIBRARY_PATH so that tests will
  run without requiring installation of libraries when we use --enable-dynamic
  (LD_LIBRARY_PATH is always set, since it can't really hurt).

New id2entry (id-less) format (ldbm/bdb2)
Removed id2children (ldbm/bdb2)
Added nextid database (ldbm)
Broke ldbmtest
Removed ldif2* tools (ldbm/bdb2)
Added slap tools (slapadd, slapcat, slapindex)

ldapsearch:
    use draft guidelines for determining when to use
    -t only writes binary attributes to files
    -tt writes all attributes to files
    output now lists URL instead of path to such files
    -T dir can be used to specify directory to create temp files in
    -V urlprefix can be used to change the URL prefix
    LDIF is now commented (can be disabled using -LL)
    LDIF now contains version attribute (can be disabled with -LLL)
LDIF:
    put interface changed to allow caller to specify how to encode
    put interface uses draft guidelines for determine when to base64 encode
    wrapping kludged to match old off by one bug
Tests:
    removed trailing space from some attributes (to avoid base64 encoding)
    enabled -LLL in defines.sh (should sed output to remove
        wrapping/comments/redundant separators)
Misc:
    updated codes outputting LDIF to use new put interface
TODO:
    handling of version attribute on input
    handling of URLs on input (ie: fetch URL)

	add MODRDN newSuperior support
	add '#' support to ldapmodify (but not slurpd and ldbm tools)

Includes support for update referral for each replicated backend.
	Reworked replication test to use update referral.
Includes major rewrite of response encoding codes (result.c).
Includes reworked alias support and eliminates old suffix alias codes
(can be emulated using named alias).
Includes (untested) support for the Manage DSA IT control.
Works in LDAPv2 world.  Still testing in LDAPv3 world.
Added default referral (test009) test.

tests: use "ldapadd" instead of "ldapmodify -a"

3 doesn't work YET.

expected output files.

Modified by me to dn_*() and attr_*() functions and to use
uidObject and to handle search scopes better.  Could use some
more work.  A fun project for anyone wanting to learn how
backends work.
Modified dn_parent and dn_rdn to accept be=NULL (to bypass
be_issuffix check).  These functions should be generalized
and moved to -lldap.  A project for another day.