package/python-mako: New package

Upcoming mesa3d 10.5.x needs the host-version of this package:
http://cgit.freedesktop.org/mesa/mesa/commit/configure.ac?h=10.5&id=2b37bea010a9c9333a813cc77d28629e1382c0be



[Thomas: remove dependency on host-pkgconf, apparently not needed.]

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>