Patch provided by Hallvard B Furuseth <h.b.furuseth@usit.uio.no>.

-DNO_THREADS is now default.

Default to Make-common settings (-DNO_THREADS).

"Net Boolean Incorporated" and drop "Net Boolean" private
label.  This was done per agreement between the Foundation
and Net Boolean.   Long Live OpenLDAP!

	adds POSIX RegEx (and removes BSD re_comp/re_exec) support.
* POSIX RegEx is not currently included in the distribution, however
	we will probably add Henry Spencer's REGEX library soon.
* ACL Group functionality is also included in this merge!

Fixed Dependency Generation not to mess with Make-templates.
	side effect: depends are not carried forward after "make makefiles"

ldif2ldbm.c defaults moved to ldapconfig.h, sed no longer needed.
Changed type of lconn_lastused to time_t.
Added include <time.h> were needed.

and setting of variables from Make-platform with defaults in Make-common.

Cleaned up LDAP_CRYPT support.