Add directvnc. Not sure whether it works - for me it hangs, but I have known Radeon issues, it seems

svn path=/nixpkgs/trunk/; revision=18159

pkgs/os-specific/linux/directvnc/default.nix

···
+a :  
+let 
+  s = import ./src-for-default.nix;
+  buildInputs = with a; [
+    directfb zlib libjpeg pkgconfig xproto
+  ];
+in
+rec {
+  src = a.fetchUrlFromSrcInfo s;
+
+  inherit (s) name;
+  inherit buildInputs;
+  configureFlags = [];
+
+  /* doConfigure should be removed if not needed */
+  phaseNames = ["doConfigure" "doMakeInstall"];
+      
+  meta = {
+    description = "DirectFB VNC client";
+    maintainers = [
+      a.lib.maintainers.raskin
+    ];
+    platforms = with a.lib.platforms; 
+      linux;
+  };
+}

pkgs/os-specific/linux/directvnc/src-for-default.nix

···
+rec {
+   version="0.7.5-test-051207";
+   name="directvnc-0.7.5-test-051207";
+   hash="1is9hca8an1b1n8436wkv7s08ml5lb95f7h9vznx9br597f106w9";
+   url="http://directvnc-rev.googlecode.com/files/directvnc-${version}.tar.gz";
+   advertisedUrl="http://directvnc-rev.googlecode.com/files/directvnc-0.7.5-test-051207.tar.gz";
+  
+  
+}

pkgs/os-specific/linux/directvnc/src-info-for-default.nix

···
+{
+  downloadPage = "http://code.google.com/p/directvnc-rev/downloads/list";
+  baseName = "directvnc";
+  versionExtractorSedScript = ''s/[^0-9]*-([0-9].*[0-9])[.].*/\1/'';
+}