Perl mode and y=>

[Mark Tilford]

For some reason, Perl mode behaves oddly whenever it hits the syntax
"y => " (it thinks stuff after that is still quoted), which is used
frequently in Imager (
http://search.cpan.org/~tonyc/Imager-0.85/lib/Imager/Draw.pod#getscanline()
)
I have to replace that with "'y' =>" or "'y', ".  "x =>" or "z =>"
does not cause this problem.

1)  Any idea why?
2)  Could somebody fix this?