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.

support.  Will submit this to autoconf maintainers...

macro definition. If the declaration errors, then we don't declare it in
ac/string.h

after LN_S test.  Moved to openldap.m4 and cached result.
Does not yet handle case where LN_H == 'cp' and LN_S == 'ln'.