OVS has PKG_BUILD_DEPENDS:=python-six/host as dep.
But that doesn't seem to work, since the PKG_NAME:=six

So, this change renames the PKG_NAME to python-six, to
make it clear it's Python package.

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

Needed for Open vSwitch's python libs.
And build.

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

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>