Lightweight Java Game Library Code

Removed update() from Display.createWindow() as it caused garbage to appear as the first frame. Added a black background brush t win32 window class

Win32: Compile fixes

Win32: Fix Mouse.setCursorLocation()

Win32: Always sepcify WS_CLIPCHILDREN | WS_CLIPSIBLINGS in window style flags, since it is required for SetPixelFormat to work (according to MSDN docs)

Win32: Fix type in exception message in context.c

Win32: Handle context-dependent wgl extensions

Removed unsued JNIEnv parameter from extgl_QueryExtension

Win32 part of refactor and AWTGLCanvas