Report an error and avoid a segfault when there aren't enough arguments to     Parrot.  (The error message could use improvement, perhaps.)
Report an error and avoid a segfault when there aren't enough arguments to
    Parrot.  (The error message could use improvement, perhaps.)


git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@13344 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot