When running the following regression tests on the latest mustang builds
  test/java/awt/FullScreen/AltTabCrashTest/AltTabCrashTest.java
  test/java/awt/FullScreen/CauseDoDrawOvalDump/
it's easy to run into the following deadlock (when changing the display
mode or doing Alt+Tab):

Found one Java-level deadlock:
=============================
"AWT-EventQueue-0":
  waiting to lock monitor 0x0aab507c (object 0x02e1b1f0, a sun.awt.Win32GraphicsDevice),
  which is held by "main"
"main":
  waiting to lock monitor 0x0aab5014 (object 0x02e709e0, a sun.awt.windows.WFramePeer),
  which is held by "AWT-EventQueue-0"

Java stack information for the threads listed above:
===================================================
"AWT-EventQueue-0":
        at java.awt.GraphicsDevice.getFullScreenWindow(GraphicsDevice.java:252)
        - waiting to lock <0x02e1b1f0> (a sun.awt.Win32GraphicsDevice)
        at sun.awt.Win32GraphicsDevice.isD3DEnabledOnDevice(Win32GraphicsDevice.java:282)
        at sun.java2d.d3d.D3DBackBufferSurfaceData.createData(D3DBackBufferSurfaceData.java:58)
        at sun.java2d.windows.WinBackBuffer$WinBackBufferSurfaceManager.createAccelSurface(WinBackBuffer.java:59)
        at sun.java2d.windows.WinBackBuffer$WinBackBufferSurfaceManager.createAccelSurface(WinBackBuffer.java:45)
        at sun.java2d.windows.WinVolatileSurfaceManager.initAcceleratedSurface(WinVolatileSurfaceManager.java:115)
        at sun.awt.image.VolatileSurfaceManager.initialize(VolatileSurfaceManager.java:97)
        at sun.awt.image.SunVolatileImage.<init>(SunVolatileImage.java:66)
        at sun.awt.image.SunVolatileImage.<init>(SunVolatileImage.java:76)
        at sun.awt.image.SunVolatileImage.<init>(SunVolatileImage.java:87)
        at sun.java2d.windows.WinBackBuffer.<init>(WinBackBuffer.java:28)
        at sun.awt.Win32GraphicsConfig.createBackBuffer(Win32GraphicsConfig.java:358)
        at sun.awt.windows.WComponentPeer.replaceSurfaceData(WComponentPeer.java:380)
        - locked <0x02e709e0> (a sun.awt.windows.WFramePeer)
        - locked <0x02e3f658> (a java.awt.Component$AWTTreeLock)
        at sun.awt.windows.WComponentPeer.replaceSurfaceData(WComponentPeer.java:346)
        at sun.awt.windows.WComponentPeer$2.run(WComponentPeer.java:394)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)
"main":
        at sun.awt.Win32GraphicsDevice.setFullScreenWindow(Win32GraphicsDevice.java:356)
        - waiting to lock <0x02e709e0> (a sun.awt.windows.WFramePeer)
        - locked <0x02e1b1f0> (a sun.awt.Win32GraphicsDevice)
        at CauseDoDrawOvalDump.<init>(CauseDoDrawOvalDump.java:61)
        at CauseDoDrawOvalDump.main(CauseDoDrawOvalDump.java:27)

Found 1 deadlock.