relax SVN archive

Fix for the global settings window - it needs to inherit from UF_window!

A minimum size is now set to prevent the settings windows from being resized too small.

Complete redesign of the relax global settings window to fix the Mac OS X crashing.

This is an attempt at fixing bug #18197 (https://gna.org/bugs/?18197).

The old code has been completely eliminated and replaced with a new set of methods in the base
relax_gui class and a new Global_parameters class in gui.settings which is of the same design as the
free file format settings window.

All the result list boxes are now created by add_list_box().

The results tab now nicely resizes.

Alphabetical ordering of methods.

The steady-state NOE results box now resizes.

Shifted the model-free list box in the results tab into the new add_list_box() method.

The model-free analysis tab now uses the base class add_spin_element() method for the max iterations.

Created the analysis tab base class methods add_spin_control() and add_spin_element().

These are similar to the text control and text selection elements respectively, but use a SpinCtrl
instead.

Improved layout of the model-free tab GUI element for resizing.