libcore|Vector: Generic component swizzling
Oculus Rift|libappfw: Fixing up projection, head position
Client: Working on positioning the composited UI
Cleanup|OS X: Fixed warning from postbuild script

Todo: test_glsandbox needs to use the Doomsday SDK.
Oculus Rift|Fixed: Projection plane distances

Also added a method for querying the number of map units per meter.
Fixed|VR|Client: Applying head tracking, fixed VR settings dialog
Oculus Rift|Client: Applying head position to composited UI and view