Cleanup
- for portablity we can keep the old ugly defines for retrieving
active object, cfra and so on. But, they will use 'scene' not
G.scene.
- fixed code that uses those defines.
- some unused variables/functions removed
Initial commit of drawing code for Action Editor / Dopesheet. By default, the Dopesheet is now enabled (like in AnimSys2). There are still a few unresolved problems (like bad alpha blending for icons, and keyframes still not being drawn). However, these will be resolved in due course.
* Fixed current frame number drawing in Animation Editors, so that the little frame number indicator box gets shown (animsys2 feature).
* Made all Animation Editors draw markers and preview range
* Added new 'Animation' submodule under Editors. This will be used to house all code + features that are used by many different Animation Editors (Action/Dopesheet and IPO) as well as other parts of Blender.
* Added back some of the core code need by the Action/Dopesheet editor, which will also be used by IPO Editor.
* Brought back file for keyframing management code (i.e. keyframing.c), but there's still quite a lot of missing stuff that I'll need to restore, so in the meantime, it's #if 0'd out.
* Moved markers code to this new module (I'm not sure whether SVN will recognise this change, as TortoiseSVN doesn't seem to have any obvious copy/move commands)
