Two updates:
1. Remove the "run as root" error message from orterun.c, because that
functionality is now in orted_submit.c (although it is still
required in orte-dvm.c -- so sync the message in orted_submit.c and
orte-dvm.c to be identical).
2. Slightly tweak the text of the "run as root" error message to
explicitly state that we (strongly) suggest running as a non-root
user (and add a little whitespace).
Signed-off-by: Jeff Squyres <jsquyres@cisco.com>