CPMenu broken again and proposed fix

[Saikat Chakrabarti]

I think Francisco's latest commit
(http://github.com/280north/cappuccino/commit/0561f69c860ce820035a89220695d9ae81081530)
broke autosizing of the menu. It's just a simple typo - to fix, the
setFrame method of CPMenu should read:

if (!_CGSizeEqualToSize(size, aRect.size))
[self tile];

instead of

if (_CGSizeEqualToSize(size, aRect.size))
[self tile];

Thanks!