Bugfix: WM gesture manager was not assigning gesture to the
context-defined region, making border select calls from a
header not work.
This fixes Node header option "Border select".
Think global, act local!
The old favorite G.scene gone! Man... that took almost 2 days.
Also removed G.curscreen and G.edbo.
Not everything could get solved; here's some notes.
- modifiers now store current scene in ModifierData. This is not
meant for permanent, but it can probably stick there until we
cleaned the anim system and depsgraph to cope better with
timing issues.
- Game engine G.scene should become an argument for staring it.
Didn't solve this yet.
- Texture nodes should get scene cfra, but the current implementation
is too tightly wrapped to do it easily.
Commit of WIP code (what code isn't wip, these days ;)
- only drawing code as basis to work further from (and have less conflicts between different systems I work on)
