Pass the delimiter character to parseaddr so that we can correctly

Pass the delimiter character to parseaddr so that we can correctly
decide between comma and space

SCCS-mr: usr.sbin/sendmail/src/alias.c 205
SCCS-mr: usr.sbin/sendmail/src/parseaddr.c 205
SCCS-mr: usr.sbin/sendmail/src/recipient.c 205
SCCS-mr: usr.sbin/sendmail/src/envelope.c 205
SCCS-mr: usr.sbin/sendmail/src/savemail.c 205
SCCS-mr: usr.sbin/sendmail/src/version.c 205
SCCS-vsn: usr.sbin/sendmail/src/alias.c 3.45
SCCS-vsn: usr.sbin/sendmail/src/parseaddr.c 3.80
SCCS-vsn: usr.sbin/sendmail/src/recipient.c 3.52
SCCS-vsn: usr.sbin/sendmail/src/envelope.c 3.12
SCCS-vsn: usr.sbin/sendmail/src/savemail.c 3.60
SCCS-vsn: usr.sbin/sendmail/src/version.c 3.325