relax SVN archive

Introduced the empty() method into the structure API to check if structural data is loaded.

This will be used in the spin loading wizard of the spin viewer window.

Converted the structure.read_xyz user function front end to the new design.

This will be used later for introducing this into the GUI.

Small print out fix for the Mac OS X framework checking script.

Reintroduced the relax intro print out when running in info mode (relax --info).

This was removed from the info print out in the last commit, and this reintroduces it at the start
up level.

Improved details of relax and the compiled C modules from the info print out.

The relax introduction has also been removed so it is not printed from the sys_info user function.

wxPython 2.9 fix for the spin viewer window (at least for Mac OS X).

The FlexGridSizer now requires the number of elements to be exact or set to zero to expand on
demand!

The maximize calls for the spin viewer window are now turned off for Mac OS X systems.

This is to fix certain Mac systems when the wxPython install is compiled for wxGTK.

Missing import fix.

Bug fix for Mac OS X - the main window is no longer started maximised.

This was reported by Jack Howarth at https://mail.gna.org/public/relax-users/2012-03/msg00053.html
(Message-id: <20120326161412.GA30924@...>). The thread continues at
https://mail.gna.org/public/relax-users/2012-04/msg00003.html (Message-id:
<CAED9pY9uuVyYSBP+9E2yPE7AydnP=BK6JBsmWw61gqo5zj+rzw@...>).

This maximisation is a problem for certain, though not all, Mac OS X systems.

Created a dictionary object containing wxPython version info within the status singleton object.

This is being used to construct the Mac dock icon, when the Carbon and Cocoa builds and not GTK are
being used.