add screen, does complain about getting/setting a config file in /etc

svn path=/nixpkgs/trunk/; revision=1207

pkgs/tools/misc/screen/builder.sh

@@ -0,0 +1,3 @@
+. $stdenv/setup
+
+genericBuild

pkgs/tools/misc/screen/default.nix

@@ -0,0 +1,12 @@
+{stdenv, fetchurl, ncurses}:
+
+stdenv.mkDerivation {
+  name = "screen-4.0.2";
+  builder = ./builder.sh;
+  src = fetchurl {
+    url = ftp://ftp.nluug.nl/pub/gnu/screen/screen-4.0.2.tar.gz;
+    md5 = "ed68ea9b43d9fba0972cb017a24940a1";
+  };
+
+  buildInputs = [ncurses];
+}