Comment 2 for bug 666370

It took me a while to notice that the units are located on share/units.[xml|txt], instead of the src folder, but after finding it, it was only a matter of replacing "deg" to "°" and checking if anything broke.

Actually it did break Rotate(which was odd, since Skew still worked), so I replaced all occurrences of "deg" on the codebase, which seems to have fixed it.

So, here's the patch.