Clarify a few comments.

give "/foo", then it will check $HOME/foo, $HOME/./foo, then /foo.
This might not be what the installer hand it mind... but then again
may be it is.
w_userconf and w_conf both now use NULL arguments to disable conf loading.

Also modified openldap_ldap_init_w_userconf to not prepend a pathname
to filenames starting with "/" or "./".

the exact nature of the functionality being tested.  -DNO_THREADS
does NOT have a yield select, hence the macro is not defined.
The slapd/daemon code has been changed to test both no threads
and yielding select before using a timeout of NULL.

actually use -c option.

  Updated to use libtool 1.2 (with FreeBSD3.0 a.out v. elf detection).
  Updated autoconf to 1.12 with sed patch (don't use stock 1.12).
  aclocal.m4 is built using automake's aclocal, v1.3.
  Updated mkdep to support libtool .lo files.
Updated automake provided macros for TERMIOS, STRTOD, MKTIME, PTRDIFF_T
Autoconf now checks to ensure C compiler supports ANSI C prototypes.
Updated make files templates.

Need to extend autoconf to support user setting.