Suggested by Jauder Ho <jauderho@transmeta.com>.

Fix suggested by Hallvard Furuseth <h.b.furuseth@usit.uio.no>.

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.