- update to r3751
    - patches merged
    - tigervnc-xclients.patch
    - tigervnc-clipboard.patch
    - tigervnc-rh212985.patch
    - basic RandR support in Xvnc (resize of the desktop)
    - use built-in libjpeg (SSE2/MMX accelerated encoding on x86 platform)
    - use Tight encoding by default
    - use TigerVNC icons