SLAPD_NEXTID_CHUNK.  Code protects NEXTID file to ensure
its equal to or greater than nextid.  Updated on close
to actual nextid.  next_id_save() could be called periodically
if desired.  Default chunk size is 32.  Define to 1 to disable
chunking.

for this file.  Changes were to NULL the conn->c_dn and conn->c_cdn
after anonymous binds.  Previously they were left to old values.
Backends should do the same.

This removes a race condition upon the entry.

(don't make it conditional on p == NULL)

introduction of pid/agrs parameters to the test-suite slapd.conf files;
creation of sub-directory test/var for storage of pid/args files during test;
update of the slapd and slapd.conf man pages.
(The change reduces dependency on ldapconfig.h, since SLAPD_PIDEXT
 and SLAPD_ARGSEXT are deleted from the code.)

Is initialized to 0 (unknown) and then set to 2 or 3 on bind.  Should
also be 0->3 if a special (or any) operation occurs before the bind.

BerElement argument per latest IETF ldapext draft c api spec.
That is, caller is solely responsible for freeing the BerElement
allocated and returned by ldap_first_attribute.
Update man pages accordingly.
Update applications accordingly.

and uppercase.  (aliased_dn are stored in normalized uppercase format).

is at a DNSEPARATOR.  Moved DNSEPARATOR macro from dn.c to slap.h

(suffixAliasing only maps input dn's, not output dn).

provided dn (which is normalized and uppercased).   This preserved
the trailing portion of the dn.

Update slap_op to maintain dn and ndn (derived from conn->c_dn).
Update ldbm_back_bind to return actual bound dn (including rootdn)
	for use in slapd_conn.  Other backends use client dn.
Modify other codes to use ndn (normalized uppercase dn) most everywhere.
Aliasing, Suffixing and modrdn could use more work.
Applied suffixing to compare and modrdn.

Suggest --with-threads=posix when error is reported.

Once we have private types for threads, this check can be removed.

Note: we probably can replace the dn2entry_r with dn2id as only the id
is needed unless we're holding the lock for filtercandidates or something