Adjust SRC_URI for python-2.6.9 to not require xz_utils.

* xz_utils isn't available on x86_gcc2, so we should not depend
  on it unless there's a good reason
Delete old "setuptools" (Python) recipes, create new recipe (that actually works).

That hack is pretty nasty, I know. But I couldn't find a better solution
that worked, so it'll have to stay.

Confirmed this works by writing a GYP recipe that uses it, that is coming
in the next commit.
Create GYP recipe.

Requires python_setuptools for the build and install. Worked for me.
LibQt4: Add Deskbar symlinks in the _devel package, fix whitespace.