p4raw-id: //depot/perl@31302
Duping a filehandle which has the C<:utf8> PerlIO layer set will now
properly carry that layer on the duped filehandle. (Rafael)
+Localizing an hash element whose key was given as a variable didn't work
+correctly (as in C<local $h{$x}>). (Bo Lindbergh)
+
=head1 New or Changed Diagnostics
=head2 Deprecations