Add rsyslog 7.2.6 and its dependencies

pkgs/development/libraries/libee/default.nix

@@ -0,0 +1,16 @@
+{ stdenv, fetchurl, pkgconfig, libestr }:
+stdenv.mkDerivation {
+  name = "libee-0.4.1";
+
+  src = fetchurl {
+    url = http://www.libee.org/download/files/download/libee-0.4.1.tar.gz;
+    md5 = "7bbf4160876c12db6193c06e2badedb2";
+  };
+
+  buildInputs = [pkgconfig libestr];
+
+  meta = {
+    homepage = "http://www.libee.org/";
+    description = "An Event Expression Library inspired by CEE";
+  };
+}

pkgs/development/libraries/libestr/default.nix

@@ -0,0 +1,8 @@
+{ stdenv, fetchurl }:
+stdenv.mkDerivation {
+  name = "libestr-0.1.4";
+  src = fetchurl {
+    url = http://libestr.adiscon.com/files/download/libestr-0.1.4.tar.gz;
+    sha256 = "1qw5vqryawdm434l9ql3r160ap2f5mmp7b6pciac7qli62y0a2z3";
+  };
+}