Switched from a macro to GCC deprecated attributes.
Also removed the deprecated struct used by KLSetApplicationOptions
and KLGetApplicationOptions because they weren't touching it.
Replaced pointer-to-struct arguments with void *.
KLGetApplicationOptions now also returns an error since it did
not modify its input. Not sure why it wasn't before since no one
should be calling it on Mac OS X.
Commit By: lxs