Not quite sure if the entry lock handling is correct yet.

handle ldapconfig.h.in.

Remove include/portable.h as it will now be built by configure.

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.