[Bf-python] Python GUI additions

[joeedh]

Hi.  Now that we have a OnSave scriptlink, and the ability to 
create/modify scriptlinks through python, I think it is time to consider 
plugging Python scripts into parts of the Blender GUI.

For example, we could have a Python tab in the Object buttons, maybe 
next to the effects tab.

The only problem is, Blender uses static button codes, so the python 
scripts would be *required* to use button codes 5000+.  Also, I'm not 
entirely sure if the Draw module would work for this purpose, so it 
might be neccassary to code a basic Interface module (or not, I'm still 
looking at that).

Under this system, scripts would use a registering system like the new 
menus.

joeedh
P.S.: As for saving data, I've discovered the print to file command 
works nicely on Blender Text objects, and lets you store Registry 
dictionaries (so long as they don't contain object reference data, 
except for lists, dictionaries and probably tuples to).