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/patches/002-do-not-add-include-dirs-when-cross-compiling.patch

@@ -0,0 +1,14 @@
+diff --git a/setup.py b/setup.py
+index cbdeaf3..5154412 100644
+--- a/setup.py
++++ b/setup.py
+@@ -480,7 +480,8 @@ class PyBuildExt(build_ext):
+                         add_dir_to_list(dir_list, directory)
+ 
+         if os.path.normpath(sys.prefix) != '/usr' \
+-                and not sysconfig.get_config_var('PYTHONFRAMEWORK'):
++                and not sysconfig.get_config_var('PYTHONFRAMEWORK') \
++                and not cross_compiling:
+             # OSX note: Don't add LIBDIR and INCLUDEDIR to building a framework
+             # (PYTHONFRAMEWORK is set) to avoid # linking problems when
+             # building a framework with different architectures than