relax SVN archive

Reverted the temporary r11010 for testing the merging of the bieri_gui branch.

The command used was:
svn merge -r11010:r11009 .

Bug fix for the minimisation user functions.

This was introduced accidentally in r11007. The reference self._exec_info was accidentally set to
self.__exec_info.

Reverted r11004 as this, for some unknown reason, undid the changes of r11001.

The command used was:
svn merge -r11004:11003 .

Temporary set up the svnmerge properties to merge the bieri_gui branch back into the 1.3 line.

The command used was:
svnmerge.py init svn+ssh://bugman@.../svn/relax/branches/bieri_gui

This will be used solely to test if this branch can be merged.

Removed the epydoc tags from the on() and off() methods.

These are user functions, and the tags were killing fetch_docstrings.py.

Fixes for some error messages in fetch_docstrings.py.

This should have been writing to stderr, not sys!

Converted the user function exec_info object to be private.

This was bad in 2 ways, it was visible to the user and it was killing the fetch_docstring.py script.

Fix for the docstring fetching script.

The relax prompt interface is no longer run as the user functions are directly located in the
_locals private dictionary.

Improvements to the handling of the PyMOL Python packages.

The methods have been alphabetically ordered as well.

Renamed the pymol modules to pymol_control in the __all__ lists and unit tests.