relax SVN archive

Updated the release checklist to include the freshmeat announcment and a shift of the CHANGES file.

The part about updating the CHANGES file has been shifted to be after the creation of the tag.

Ported r2724 from the 1.3 line.

The command used was:
svn merge -r2723:2724 svn+ssh://bugman@.../svn/relax/1.3

This was just a simple change in the comments.

Bulk ported revisions r2668 to r2717 from the 1.3 repository line.

The command used was:
svn merge -r2667:2717 svn+ssh://bugman@.../svn/relax/1.3

This updates the 'tensor_pdb' branch all the way up to r2719 which Chris ported to this branch in
r2720.

Standardised the word 'centre'.

Previously the two spellings 'center' and 'centre' were being used. This change will have zero
effects on program usage.

Significant improvements and expansion of the 'pdb.create_tensor_pdb()' user function docstring.

Fixed a bug in the 'pymol.view()' user function in which 'reinitialize' was spelt 'ise'.

This was reported by Chris MacRaild at https://mail.gna.org/public/relax-devel/2006-10/msg00204.html
(Message-id: <1162304784.3525.133.camel@...>).

Fixed a bug in the 'pdb.create_tensor_pdb()' user function when no diffusion tensor has been loaded.

This was reported by Chris MacRaild at https://mail.gna.org/public/relax-devel/2006-10/msg00204.html
(Message-id: <1162304784.3525.133.camel@...>).

The solution was simply to add a test for the presence of the diffusion tensor.

Changed the comment of the 'RelaxNoPdbChainError' class to the correct explanation.

ported r2634,r2636 & r2716 to the test-suite branch, corrected test_float.py

commands used
svn merge -r2633:2634 svn+ssh://varioustoxins@.../svn/relax/1.2
svn merge -r2635:2636 svn+ssh://varioustoxins@.../svn/relax/1.2
svn merge -r2715:2716 svn+ssh://varioustoxins@.../svn/relax/1.2

these changes add the ieee-754 nan/inf code, add nan catching
and change Test_float so the first unit test works.
I also tidied some conventions

Further fix of the pymol.cartoon bug

As suggested by Edward:
https://mail.gna.org/public/relax-devel/2006-10/msg00227.html