relax SVN archive

Python 3 import fixes for the generic_fns.structure package using relative paths.

Python 3 fix for the writing out of XML formatted state and results files.

In Python 3, the xmldoc.toprettyxml() returns a string object which needs to be 'encoded' prior to
writing out to file.

Python 3 fix - removed the use of the string.lower() function in the OpenDX mapping code.

Python 3 fix for the frame order system tests matching r17678.

As float to string conversions behave differently, the %.1f formatting is used to force only a
single decimal place float.

Python 3 fix for the frame order system tests - float to string conversions behave differently.

Now the explicit %.1f formatting is used to force only a single decimal place float.

Python 3 integer division to float fix for the frame order analysis.

Python 3 bug fix for the frame order analysis - another int division problem.

Python 3 fixes - eliminated all usage of the dictionary has_key() calls as they are no longer present.

Python 2 and 3 support in the generic_fns.relax_data module using 2to3.

One print call was fixed after running 2to3.

Python 3 bug fix for the Structure.test_read_pdb_mol_2_model_scientific system tests.

This is again an integer division problem returning a float.