relax SVN archive

Fix for the ANSI escape sequences for colouring text for when an isatty() method does not exist.

This is needed for the epydoc constructed API documentation as the redirection is a special epydoc
_Devnull object which has not isatty() method!

Fix for the creation of the HTML user manual http://www.nmr-relax.com/manual/index.html file.

Readded the http://www.nmr-relax.com/manual/index.html webpage.

Updated the relax HTML user manual to version 1.3.15.

This is located at http://www.nmr-relax.com/manual/index.html.

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.