* Fixed bug with input devices that where added, removed then re-added.
The default mappings were being ignored on the second add.
* Fixed potential crash when hardware inputPlugin device poses were polled from the JavaScript thread
by taking the UserInputManager lock during pluginUpdate.
* Renamed Controller.Hardware.Vive.LB & RB to LeftGrip and RightGrip, to better match Oculus touch.
* Updated resource/controller/vive.json to reflect this new mapping.
* Exposed touch pad capacitive touch events to JavaScript as
Controller.Hardware.Vive.LSTouch and RSTouch.
* Added viveTouchpadTest.js script to test LSTouch and RSTouch events.
The AvatarHoldAction now derives the body velocity by using data from the controller::Pose. Rather then trying to derive it based on previous positions. This results in more acurate motion of the held object when the hold is released.
OpenVR input plugin: pass the velocity and angularVelocity directly from the controller pose to the controller::Pose.
Pass a InputCalibrationData to each inputPlugin and inputDevice.
This contains the most up sensorToWorldMatrix, avatarMat and hmdSensorMatrix.
Each input plugin can use this data to transform it's poses into Avatar space
before sending it up the chain.
This fixes a bug in the handControllerGrab.js script that relied on the hand controller
rotation/positions being in the avatar frame.
* Call vr::VR_Shutdown() when ref-count goes to zero. The ref-count
is ncessary because the vr::IVRSystem poitner is shared between the
the openvr input and display plugins.
* OpenVR plugins options will display in the menu if vr::VR_IsHmdPresent() is true.
This is faster then initializing all of openvr and less likely to conflict with the
oculus display plugin.
