* Make modifier and constraint templates use left/right alignment for
buttons in the header.
* Added mdef bind operator as an example of how to use local context
for a modifier, and add some code I forgot to commit last time to
make this system actually work.
* Added Constraints template and Add Constraint operator.
* Added toggle=True/False parameter to uiItemR, to get a
toggle button (actual button) rather than an "option"
button (checkbox)
* Added OPTION/OPTIONN button type, to distinguish with
TOG/TOGN.
RNA:
* Make all modifier pointers editable, including correct updates.
* Added notifiers and updates to constraints.
* Fix a stack corruption, pointed out by Andrea, and potentially
causing crashes.
Added subdivide operator and button for multires.
Since this seems to be the only modifier with an operator defined, I'm not sure if I put it in a good place or not, someone can check on this?
* template_modifier creates the modifier box, and returns a layout
to put the buttons in.
* Only the armature modifier is now done with python code, all other
modifiers use C code. To convert a modifier to python, remove the
corresponding C code and create a function in DATA_PT_modifiers.
* Some modifiers still require some RNA work to get it working well,
especially to make pointers editable. Mostly that is a matter of
defining an own _set callback and put some of the modifier C code
into it.
* Still various buttons that don't work, like for hooks or mesh
deform binding.
* Fix for crashing decimate modifier (still disabled).
* Removed UI_BUT_NO_HILITE, HMENU.
* Make uiLayoutBox work with align.
* Made separator item work horizontal & vertical.
* Add colon (:) automatic for int/float/enum/string.
* Added space variables to uiStyle and use them in the
layout engine.
* Added initial World buttons by Thomas Dinges, thanks!
* Added some code for modifiers in the Object Data context.
This will become a template though.
* Use a common poll() callback in the scripts to reduce code.
