enables if MINGW32 and always enables if MINGW32).

(excepting WIN32_LEAN_AND_MEAN).  Rework openlog/closelog use to
eliminate need for defines.

replaced with actual functional tests.  Needed to provide uWin
and other Unix on NT environments.

avoid having to define macros by hand in acconfig.h (which
were mistaken added to portable.h.in).

Linux equivs.  Should be extended to support other quality
sources of entropy.  Should be extended to support a reasonable fallback.

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

  libwrap was a dynamic library). Added -lwrap to new subst var WRAP_LIBS
  so we have more control over where it get's linked (dynamic libwrap
  causes problems when we link to programs that don't define certains
  globals that libwrap expects).
* build/top.mk: Added placeholder for WRAP_LIBS subst
* servers/slapd/Makefile.in: Added $(WRAP_LIBS) to the slapd and sslapd
  link command line specifically so it doesn't get thrown in with the rest
  of the LIBS.
* configure: rebuilt

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

build/openldap.m4 and configure.in

configure.  Implementation is dependent upon autoconf internals.
Attempts to use AC_REVISION hammered by libtool bugs.  Will submit
reports to libtool camp and rework configure.in once fixes are
released.

socketpair.  Use dependent on useful detection is.

to build OpenLDAP.

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

suitable for systems with poor (or nonexistant) Pthread implementations.

	for inet_aton().  May be linked in when not absolutely necessary...
	but no big deal, we'll likely start using res_search over sychronous
	get{host,peer}byname calls anyways.
inet_aton() detection: use link instead of compile