bug fixes and changes for lpc command.

bug fixes and changes for lpc command.

SCCS-vsn: usr.sbin/lpr/common_source/printcap.c 1.5
SCCS-vsn: usr.sbin/lpr/lpd/lpd.c 4.2
SCCS-vsn: usr.sbin/lpr/lpq/lpq.c 4.2
SCCS-vsn: usr.sbin/lpr/lpr/lpr.c 4.16
SCCS-vsn: usr.sbin/lpr/lprm/lprm.c 4.2
SCCS-vsn: usr.sbin/lpr/Makefile 4.9
SCCS-vsn: usr.sbin/lpr/lpd/printjob.c 4.2
SCCS-vsn: usr.sbin/lpr/lpd/recvjob.c 4.2
SCCS-vsn: usr.sbin/lpr/common_source/rmjob.c 4.2
SCCS-vsn: usr.sbin/lpr/common_source/startdaemon.c 4.2
SCCS-vsn: usr.sbin/lpr/common_source/common.c 4.2
SCCS-vsn: usr.sbin/lpr/common_source/lp.h 4.2