[perl #130760] Rakudo's usage message in the case of illegal options is printed to STDOUT, not STDERR

[jn...@jnthn.net via RT]

On Sat, 11 Feb 2017 00:42:38 -0800, moritz wrote:
> $ perl6 --type=foo examples/dirstat.p6 > /dev/null
> $
> This is Rakudo version 2017.01-170-gc0a907f built on MoarVM version
> 2017.01-31-g20dfa6b
> implementing Perl 6.c.
> 
> Error messages should go to STDERR, so that pipes and redirects work as
> expected in a Linux/UNIX environment.
> 
Seems fixed by now; just needs a test.