Log message:
Mark packages as not ready for python-3.x where applicable;
either because they themselves are not ready or because a
dependency isn't. This is annotated by
PYTHON_VERSIONS_INCOMPATIBLE=  33 # not yet ported as of x.y.z
or
PYTHON_VERSIONS_INCOMPATIBLE=  33 # py-foo, py-bar
respectively, please use the same style for other packages,
and check during updates.

Use versioned_dependencies.mk where applicable.
Use REPLACE_PYTHON instead of handcoded alternatives, where applicable.
Reorder Makefile sections into standard order, where applicable.

Remove PYTHON_VERSIONS_INCLUDE_3X lines since that will be default
with the next commit.

Whitespace cleanups and other nits corrected, where necessary.

Log message:
Update Makefile

Log message:
PLIST cleanup.

Log message:
Import py27-forthon-0.8.10 as wip/py-forthon.

Forthon provides an extensive wrapping of Fortran95 code, giving access to
routines and to any data in Fortran modules. Forthon also
provides an extensive wrapping of Fortran derived types, giving access to
derived type members, allowing passing of derived types into Fortran routines,
and creation of instances at the Python level. A mechanism for automatic
building of extension modules is also included. Versions using Numeric and
Numpy are available