1. DirectInput is deprecated (http://en.wikipedia.org/wiki/DirectInput). Specifically, Microsoft recommends using regular windows messages for keyboard and mouse input.
2. Not using DirectInput enable us to use the Raw Input JInput plugin to access multiple mice (and keyboards).
3. We're already using windows messages for features DirectInput never supported, so by removing DirectInput dependency, we get rid of some special case code.
4. When we're only using windows messages for input, we're (theoretically) more compatible than with a dependency on a properly working DirectInput.
Keyboard with AWTGLCanvases. Programs can now avoid implementing AWT input processing and access the mouse grabbing features from both Display and AWTGLCanvas. See org.lwjgl.test.opengl.awt.AWTInputAdapterTest for an example.
Note: This commit is the linux and generic AWT imlementation and can still
change a lot while implementing windows and mac os x.