fixes issue 501 + in Vista an extra arg was added in the middle of the   params to NtGdiOpenDCW so needs special handling
fixes issue 501
+ in Vista an extra arg was added in the middle of the
  params to NtGdiOpenDCW so needs special handling

SVN-Revision: 404

sigma-random/drmemory,LohithBlaze/drmemory,LohithBlaze/drmemory,LohithBlaze/drmemory,LohithBlaze/drmemory,code4bones/drmemory,code4bones/drmemory,code4bones/drmemory,code4bones/drmemory,sigma-random/drmemory,sigma-random/drmemory,LohithBlaze/drmemory,sigma-random/drmemory,code4bones/drmemory,sigma-random/drmemory