relax SVN archive

Some more print statement updates for Python 3.x.

This was down with the python 2.x to 3.x script with the commands:
2to3 -w -f print relax .

The change is in preparation for Python 3.0, and relax still works with Python versions 2.4, 2.5,
and 2.6.

Removed some debugging code.

The whitespace after commas has been enforced (for Python 3.x).

This was done with the python 2.x to 3.x script with the command:
2to3 -w -f ws_comma relax .

The change is in preparation for Python 3.0, and relax still works with Python versions 2.4, 2.5,
and 2.6. All commas now have whitespace after them.

The docs/2to3_checklist file has also been updated with all the 2to3 changes.

Made the profile module optional, removing the dependency on the Python development packages.

This was in response to Tiago Pais's <tpais att itqb dot unl dot pt> message at
https://mail.gna.org/public/relax-users/2009-08/msg00040.html (Message-id:
<A3A9E765436240CDA75B3045C405BED6@...>).

Added a check for non-existent modules, and updated the __all__ lists.

Updated the package __all__ lists.

Comment fixes.

Added a check for the __all__ list of the data package.

Added many more checks for the package __all__ lists.

Shifted the test___all__() method into the PackageTestCase base class.