python packages: move all things python under lang/python

I admit this may be be a bit aggressive, but the lang
folder is getting cluttered/filled up with Python, PHP, Perl,
Ruby, etc. packages.

Makes sense to try to group them into per-lang folders.

I took the Pythons.

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>

lang/python/python-cryptography/patches/001-disable-setup-requirements.patch

@@ -0,0 +1,12 @@
+diff --git a/setup.py b/setup.py
+index b5c05df..a777dd7 100644
+--- a/setup.py
++++ b/setup.py
+@@ -266,6 +266,7 @@ class DummyPyTest(test):
+ with open(os.path.join(base_dir, "README.rst")) as f:
+     long_description = f.read()
+ 
++setup_requirements=[]
+ 
+ setup(
+     name=about["__title__"],