- Update setuptools to 40.8.0
- Update pip to 19.0.3
- Refreshed patches
- Removed 4 patches (2 of them was included in 3.7.3 and other two are
included in this release)

Makefile python3:
- Move PKG_MAINTAINER above PKG_LICENSE

Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>

This patch, taken from buildroot, avoids the use of host paths when
compiling third-party extensions.

Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>

This was a bit overdue.
I did not know about this methodology.
Reduces patch fuzz.

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>

Patch taken from buildroot:
  http://git.buildroot.net/buildroot/tree/package/python/python-008-distutils-use-python-sysroot.patch

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