Export ol.webgl.SUPPORTED and provide ol.webgl
Provide ol.canvas instead of ol.canvas.SUPPORTED

This is not currently used outside the library, so it is not exported.
Provide ol.renderer.dom instead of ol.renderer.dom.SUPPORTED
Export ol.DeviceOrientation.SUPPORTED and provide ol.DeviceOrientation
Export ol.Geolocation.SUPPORTED and provide ol.Geolocation
Merge pull request #1017 from tschaub/provide-objects-only

Never use goog.provide with primitives (especially with falsely values).