relax SVN archive

Shifted the Release_Checklist document into docs/devel/ to hide it from users.

Changed the organisation of the files in the docs/ directory.

A new docs/devel directory has been created and the 2to3_checklist, Mac_framework_build_3way,
package_layout, and prompt_screenshot.txt documents shifted into it. This is to hide or abstract
away the development documents so that relax users do not see them when looking into docs/. This
should make the directory less intimidating.

Spacing fix in the user_function_changes.txt document.

Changed the order of the two relax versions being compared for user function changes.

This is in the diff.py script and log file and the user_function_changes.txt document.

Added all user function ranamings since relax 1.3.1 to the translation table.

These were taken directly from the docs/user_function_changes.txt document. Earlier relax versions
are far too different, so this will be the earliest relax version for this translation table. The
relax 1.2 and earlier (and 1.3.0) versions used the run argument throughout and the scripting was so
different, that telling the user how to upgrade to new user functions is pointless. And the release
date of relax 1.2.15, the last of these old designs was in November 2008.

Added all remaining user function ranamings since relax 2.0.0 to the translation table.

These were taken directly from the docs/user_function_changes.txt document.

Updated the user_function_changes.txt document.

This now lists all changes in the user function naming from relax version 1.0.1 all the way to relax
3.3.0.

Added the relax 1.0.1 to 1.2.15 user function printouts.

The diff.log file has also been updated with all of these versions.

Changed the behaviour of the script for showing user function difference between relax versions.

The relax versions are now reversed so the oldest version is at the bottom of the difference
printout.

Added the relax 1.3.0 to 1.3.4 user function printouts.