relax SVN archive

Small edit of the docs/devel/2to3_checklist document.

Updated the Python 2 to Python 3 migration document to be more current.

Python 3 fixes for all print statements in the extern.numdifftools package.

The print statements have been manually converted into print() functions.

Converted all the extern.numdifftools modules using the dos2unix program.

Python 3 fixes using 2to3 for the extern.numdifftools package.

The command used was:
2to3 -j 4 -w -f except -f import -f imports -f long -f numliterals -f xrange .

Python 3 fixes using 2to3 for the extern.numdifftools package (mainly spacing fixes).

The command used was:
2to3 -j 4 -w -f buffer -f idioms -f set_literal -f ws_comma -x except -x import -x imports -x long -x numliterals -x xrange .

Fixes for the Relax_disp.test_hansen_cpmg_data_missing_auto_analysis system test for certain systems.

The optimisation precision has been increased, and the value checking precision has been decreased.
This change is to allow the test to pass on Python 2.5 and 3.1 on a 32-bit GNU/Linux system. This
may be related to 32-bit numpy 1.6.2 verses later numpy versions causing precision differences.

Python 3 fixes - eliminated all usage of the dictionary iteritems() calls as this no longer exists.

Python 3 fixes throughout relax, as identified by the 2to3 script.

The command used was:
2to3 -j 4 -w -f except -f import -f imports -f long -f numliterals -f xrange .

Python 3 fixes for the relax codebase.

These changes were made using the command:
2to3 -j 4 -w -f buffer -f idioms -f set_literal -f ws_comma -x except -x import -x imports -x long -x numliterals -x xrange .