Blender Git Loki

Outliner Drag & Drop fixes

OUTLINER_OT_parent_drop
* use scene of child instead of active scene
* poll to check if parent and child are in same scene

OUTLINER_OT_parent_clear
* get scene from child instead of only working on active scene
* poll to check if no parent

OUTLINER_OT_scene_drop && OBJECT_OT_make_links_scene
* memory leak on error
* would only link some objects on error