[perl #37148] confusing imcc error message

# New Ticket Created by Joshua Hoblitt
# Please include the string: [perl #37148]
# in the subject line of all future correspondence about this issue.
# <URL: https://rt.perl.org/rt3/Ticket/Display.html?id=37148 >

The error message returned from imcc when trying to 'new' a non-existent
PMC is misleading.

--
$ cat foo.pasm
new P0, .Bigint
$ parrot foo.pasm
error:imcc:syntax error, unexpected DOT
in file 'foo.pasm' line 1
--

<chip> shirley it's just another production: '.' error { error("that
was supposed to be a type name there") } or some such