${PYTHON_DEFAULT_VERSION}, this generates conflicting packages.
- Create symbolic links as PEP 394 [1] suggests. ${PYTHON_DEFAULT_VERSION}
will create python and python${MAJOR_VERSION} links. In current default,
lang/python27 will create: python -> python2 -> python2.7
- Introduce ${PYTHON3_DEFAULT_VERSION}, which will handle bin/python3 link.
At this point, lang/python33 will create python3 -> python3.3
- Minor cleanups
* Trim Makefile headers
* Remove ${OSVERSION} detection for xz, whihc is done by USE_XZ
[1] http://www.python.org/dev/peps/pep-0394/
python3 symlink for the latest version of python3.X executable.
People who really want to use older python version for both python branches
should specify explicit version number in interpreter invocation.
Discussed on python@ long ago.
