if a port needs 2.x then set MODPY_VERSION=${MODPY_DEFAULT_VERSION_2}.
This commit doesn't change any versions currently used; it may be that
some ports have MODPY_DEFAULT_VERSION_2 but don't require it, those
should be cleaned up in the course of updating ports where possible.
Python module ports providing py3-* packages should still use
FLAVOR=python3 so that we don't have a mixture of dependencies some
using ${MODPY_FLAVOR} and others not.
TileCache provides a Python-based WMS-C/TMS server, with pluggable
caching mechanisms and rendering backends. In the simplest use case,
TileCache requires only write access to a disk, the ability to run
Python CGI scripts, and a WMS you want to be cached. With these
resources, you can create your own local disk-based cache of any WMS
server, and use the result in any WMS-C supporting client, like
OpenLayers, or any TMS supporting client, like OpenLayers and worldKit.
