relax SVN archive

Started to fill up the spin ID look up table.

The index_molecule() and index_residue() functions have been added to determine the MoleculeList and
ResidueList indices of given molecules and residues. These are used by the create_spin for
efficiency and to allow the indices (together with the spin index and spin ID string) to be
assembled into the look up table. This table is not used anywhere yet.

Initialised a look up table in the cdp.mol structure for faster spin access.

This look up table will be slowly transitioned to, and should significantly speed up certain
operations.

Created the gui.misc.bitmap_setup() function for handling bitmap alpha correctly on operating systems.

This function is required to handle alpha in bitmap on MS Windows so that regions with partial
transparency are not blended into the default dark grey colour of Windows' windows.

Added the status/weather-snow-scattered-night Oxygen icon as a wizard graphic for the temperature uf.

The about model-free dialog no longer has grey at the bottom in MS Windows.

The wx.ScrolledWindow.GetScrollPixelsPerUnit() function is now used to determine how many pixels the
y scrolling is, and rounds up the virtual size based on that.

Bug fix for the grey about windows on MS Windows!

All the about windows were grey. The temporary wxPython 2.9.3.1 fix was breaking the Windows GUI!

Bug fix for the model-free analysis tab about window - sometimes a grey region would appear at the bottom.

This is a problem in at least GTK+ as scrolling is in increments of 20!

Bug fix for sizing of the GUI about dialogs - the virtual sizes are now accurately calculated.

To do this, the window contents (a wx.BufferedDC instance) is created twice, with the virtual window
size exactly calculated in the first pass, and then used to set up the device context in the second.
A space is also now added to the end to ensure the border is there.

Improved the debugging drawing for the about GUI elements.

Hack for the relax_fit C module compilation to detect supported CPUs for Mac OS X cross compilation.