Refactor|GameMap: Take ownership of the editable Vertexes immediately
As hardening of the vertexes is now unnecessary and because we can simply take ownership of the BspBuilder's vertexes as and when the BSP build completes - there is no longer a need to defer acquiring the "primary" vertexes from the EditableMap.
Also removed the now unnecessary hardening of Polyobjs.
Refactor|GameMap: Take ownership of the editable Vertexes immediately
As hardening of the vertexes is now unnecessary and because we can
simply take ownership of the BspBuilder's vertexes as and when the
BSP build completes - there is no longer a need to defer acquiring
the "primary" vertexes from the EditableMap.
Also removed the now unnecessary hardening of Polyobjs.