[crystax] Re add again the attribute depends

For recipes `SetuptoolsRecipe` and `SixRecipe`, seems that we cannot remove the values that we add in here, or graph.py will fail with a Cyclic dependency error

Author: opacam

pythonforandroid/recipes/setuptools/__init__.py

@@ -6,6 +6,9 @@ class SetuptoolsRecipe(PythonRecipe):
     url = 'https://pypi.python.org/packages/source/s/setuptools/setuptools-{version}.zip'
     call_hostpython_via_targetpython = False
     install_in_hostpython = True
+    # This depends below, alongside the one from SixRecipe,
+    # are crucial to solve the dependency order
+    depends = [('python2', 'python3')]
 
 
 recipe = SetuptoolsRecipe()

pythonforandroid/recipes/six/__init__.py

@@ -5,6 +5,9 @@
 class SixRecipe(PythonRecipe):
     version = '1.10.0'
     url = 'https://pypi.python.org/packages/source/s/six/six-{version}.tar.gz'
+    # This depends below, alongside the one from SetuptoolsRecipe,
+    # are crucial to solve the dependency order
+    depends = [('python2', 'python3')]
 
 
 recipe = SixRecipe()