from Booker Bense <bbense@networking.stanford.edu>.

avoid clashes with Kth Kerberos.

schemes are supported.  This should facilate server rootDSE
advertisement of supported schemes, etc..

Old code applied sync flags to store(), however supported DBMs
require such flags to be specified during open().  The new
code now applies flags in ldbm_cache_open (which calls ldbm_open).
ldbm_cache_close() now calls ldbm_sync().  This will force
a updating of on-disk contents after each LDAP operation.
The old code either failed to sync the on-disk contents until
close or synced on every store.   Per LDBM operation syncing
*should* be safe enough... real data safety requires transactions.
Removed nosync option from BDB2 as it is not compatible with
txn support.
Also added code to disable DBM level locking as slapd is only
process acessing the databases (dbnolocking).

* all others: Added DESTDIR support

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

provide prototype in lutil.h
use LBER_SOCKET_T instead of int in prototype.  (didn't use
	ber_socket_t so all of lber.h wouldn't have be dragged in)
rename signal handlers, use RETSIGTYPE, and make SIGHUP wake
rename fd to sd to reflect descriptor must be usable as a socket.
renamed sel_exit_fds to wake_sds to reflect current use
improve readability of sockpeer.c including removing obtuse goto.

socketpair.  Use dependent on useful detection is.

Use them in slapd/str2filter.c.

instead of WSAGetLastErrorString to preserve errno like semantics.

errno.

Use strerror() if available.

to validate input dn's BEFORE sending dn's to server.
Also fixed getfilter to use REG_EXTENDED|REG_NOSUB.  (and fixed one
case where REG_BASIC was still used).
s/strdup/LDAP_STRDUP/
Added ldap_pvt_str2lower/upper

reflect its purpose.  Modify switch to support REG_EXTENDED expressions.
Use REG_EXTENDED instead of REG_BASIC everywhere.
Modify <ac/regex.h> to support <gnuregex.h> for testing purposes.
Requires: env CPPFLAGS="-DHAVE_GNUREGEX_H=1" LIBS=-lgnuregex ./configure

to build OpenLDAP.

Tests behave as expected excepting slapd sometimes does not
shutdown properly.

(test001-populate runs without leak)
Free global entry string buffer on shutdown.