shell32: Add IShellFolderView:: GetSelectedObjects implementation for IShellView.

[Juan Lang]

Hi Nikolay,

I know this one's already been comitted, but I have a small complaint
about a comment:
+        /* it's documented that caller shouldn't PIDLs, only array itself */

I think you're missing a verb there.  A caller shouldn't do what to
PIDLs, exactly?  Perhaps it should be obvious to me, but I couldn't
guess by looking at it.

Thanks,
--Juan