Blender Git Loki

Manipulator: Use evaluated object's matrix to get maipulator position

With the clear separation between data and a state we need to make sure
operators and other areas are readingstate from evaluated datablocks.

Code-wise it means that all evaluated values are to be read from dataglock
which is owned by dependency graph, using DEG_get_evaluated_id() or similar
helper.

Reviewers: brecht, mont29, campbellbarton, dfelinto

Differential Revision: https://developer.blender.org/D3036