clean up problems when QUEUE compile flag not defined; clean up hostname

clean up problems when QUEUE compile flag not defined; clean up hostname
code to run on non-4.1c systems; fix use of -oeq (quiet on errors) flag.

SCCS-mr: usr.sbin/sendmail/src/envelope.c 167, 172, 173, 174
SCCS-mr: usr.sbin/sendmail/src/readcf.c 167, 172, 173, 174
SCCS-mr: usr.sbin/sendmail/src/version.c 167, 172, 173, 174
SCCS-mr: usr.sbin/sendmail/src/conf.c 167, 172, 173, 174
SCCS-mr: usr.sbin/sendmail/src/daemon.c 167, 172, 173, 174
SCCS-vsn: usr.sbin/sendmail/src/envelope.c 3.9
SCCS-vsn: usr.sbin/sendmail/src/readcf.c 3.56
SCCS-vsn: usr.sbin/sendmail/src/version.c 3.308
SCCS-vsn: usr.sbin/sendmail/src/conf.c 3.69
SCCS-vsn: usr.sbin/sendmail/src/daemon.c 3.48