relax SVN archive

Added the relax 1.3.15 PDF manual to the repository.

Updated the relax version number to 1.3.15.

Merged the CHANGES file for relax version 1.3.15 back into the main 1.3 line.

The command used was:
svn merge -r15818:15819 svn+ssh://bugman@.../svn/relax/tags/1.3.15

Updated the CHANGES file for relax 1.3.15.

relax version 1.3.15.

This is a special release for better Mac OS X support. It also introduces colour to the prompt and
scripting UI modes of relax, and the online HTML user manual has been significantly improved.

Fix for the about dialogs in the GUI when combined with a scrolling window.

This is only a problem for the wxPython 2.9 series, and the fix was suggested by Robin Dunn at
http://groups.google.com/group/wxpython-users/browse_thread/thread/7dff3f5d7ca24985.

Fixes for the HTML user manual (http://www.nmr-relax.com/manual/relax_user_manual.html).

The \widehat maths command in titles (which were only for LaTeX and not latex2html) was causing
latex2html to fail in the generation of certain images, causing the image numbers to no longer
match the text, resulting in all the images being mixed up!

Changed all of the maths in the HTML page titles.

The latexonly and htmlonly environments are now being used to produce different section titles.
The LaTeX version still uses the full maths, whereas the HTML version now has pure text output.

Improvements to the HTML version of the user manual.

The latex2html configuration script now allows for more maths in the HTML with the HTML_VERSION math
extension. The section numbers are now removed from the HTML pages to allow for more static pages
for the user functions which don't disappear as new user functions are added, changing the section
numbering. The title page has also been renamed to "The relax user manual" for better search engine
indexing.

Fix for the fetch_docstrings.py script.

The number of \linebreak[0] commands inserted was far too great. However there is still a problem
in that all \linebreak[0] commands are doubled. This is for the latex2html generated user manual at
http://www.nmr-relax.com/manual/relax.html.