important fixes necessary for proper operation of back-bdb.

newer versions of HP-UX.  However, as the test causes
no problems on any system, it's left in place (as someone
might actually be using an older version of HP-UX).

by Albert Chin-A-Young <china@thewrittenword.com> in ITS#1544.

by the giant rwlock.

submitted by Jeff Costlow <j.costlow@f5.com> (ITS#1560).

Portions:
Copyright 2002, F5 Networks, Inc, All rights reserved.
This software is not subject to any license of F5 Networks.

This is free software; you can redistribute and use it
under the same terms as OpenLDAP itself.

maybe I should trim this also).  Useful to check LARGE ldif files which
will require TONS on indices without failing at the very last entry for
a silly typo after 45 min. or more :)

URL Syntax:

ldapi://[<path>[/????[!]x-mod=<mod>]]

where <path> is the URL-encoded path of the socket (i.e. use %2F instead
of '/' for UNIX filenames!) and <mod> is 3*[w|-] (all we need is write
permission to the socket, read/execute permissions are ignored; however,
they're set when opening the listener).  The critical flag (the optional
'!' if not used ignores the result of the chmod() operation.

Add no-op control (needs backend implementation)
Updated modify password extended option API
Kludged control infrastructure to support frontend only controls

to struct bervals

and hard/demand.