backout previous nt changes (actually, just don't include nt_svc.c)

macros.  Proceedures for using alternative dependency generation
"compiler" and "flags" has changed.
    Pre-configure:
        env MKDEP=mycc MKDEP_FLAGS=myccflags ./configure
    Post-configure:
        hack top.mk and run ./config.status

now supports DETECTION using:
	./configure
	env MKDEP_FLAGS=-MM ./configure
	env MKDEP=foo ./configure (no tests, no flags)
	env MKDEP=foo MKDEP_FLAGS=-bar ./configure (no tests)
Exported AC_MKDEP and AC_MKDEP_FLAGS which can no be used
in build/*.mk

flag to generate dependencies.  Output not used (yet).

to install this patch.

This will facilate version.c generation on non-UNIX systems.

Add #undef and other protection of macros.

Moved db1/db.h check to the db1 marco in openldap.m4. Also added check for HAVE_DB1_DB_H for which header to include since it's only defined when using db1

Glibc 2.1 has Berkley db as -ldb1. Set up the autoconf to check this first, else we will actually be using compat calls in db2, and not the real db1.

non-static and non-const and needs it named "Version".

identification strings compatible with ident(1) and what(1).
Uses $(VERSION) generated from configure.in.  rm build/version
rm old version .c files

Cleanup perl detection.

on errno not getting changed by Debug().  Likely a problem elsewhere.
Tests run okay, excepting concurrency has "no such object" problems.

and, if LinuxThreads, pthread_kill_other_threads_np().

(but not sure if it's usable yet).  Needs to be tested on various versions
of Linux native LinuxThreads.

	make all
	make TMPROOT=/tmp/root install
will install everything under $(TMPROOT)$(prefix).  Useful for
building bundling packages/ports for various operating systems.