Blender Git Loki

Fix T63616: applying armature modifier with another modifier under it doesnt apply right.

Some deform modifiers (like armature) use passed Mesh parameter to
retrieve some extra data (vgroups in our case), and default to obdata
when it is not available.

This should be fine in theory in the 'apply modifier to obdata' case,
since this is always the first modifier, but here upper-level code
passes **evaluated** object, not orig one, so ob->data is not orig
anymore, and might miss some stuff...

Note that am quiet unsure whether the way evaluated data is passed
around in that apply modifier operator code is actually OK, but for now
it seems to work at least...