avoid clashes with Kth Kerberos.

instead of WSAGetLastErrorString to preserve errno like semantics.

errno.

Use strerror() if available.

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.

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

s/exit(0)/exit(EXIT_SUCCESS)/
add <ac/stdlib.h> where needed and other minor header adjustments

If someone really lacks stdlib.h, they should introduce HAVE_STDLIB_H.

Update res_search check and place behind --enable-dns.

Rework sys_errlist detection to set HAVE_SYS_ERRLIST if sys_errlist
exists.  If it declaration is needed, DECL_SYS_ERRLIST is also set.

added lber_types.h.nt, lber_types.h.in
removal of NULLxxx internal macros (in favor of NULL).
ch_free added to slapd,slurpd/ch_malloc.c
#define free ch_free (should be removed after s/free/ch_free/g) in proto-slap.h
ch_malloc and friends use ber_memalloc and friends

Fix LDAP_HI 0x377 vs 0377 bug.

Add extra AC_HTONL for win32 alpha.

Remove memory.h/malloc.h inclusion from <ac/string.h>.
Need to s/<stdlib.h>/<ac/stdlib.h> everywhere.