* callback/callback.c: use VARRUNDIR instead of MGETTY_PID_FILE
* mgetty.c: use VARRUNDIR to get name of PID file, non-conditional
* policy.h: MGETTY_PID_FILE is gone, VARRUNDIR used instead
* mgetty.c: write CallerId to UTMP, if available, Connect otherwise
* fax/faxspool: convert .pdf files via Acroread (contributed by
Michael Fischer v. Mollard, mfvm@gmx.de).
* Makefile, mksed: introduce $VARRUNDIR
* fax/faxrunqd.in, fax/faxrunq.in, fax/faxspool.in: change
location of ".last_run" to $VARRUNDIR/faxqueue_done (previously,
$fax_spool_out/.last_run creation was vulnerable to symlink attacks)
* cnd.c: add NMBR=<nnn> format for Digi DataFire RAS
* login.c: add \Y hack (simplar to \I) to get CallerID in ut_host field
* faxlib.c: distinguish Elink 310 and Elink 343
