frostwire: initial working package

This installs from the official frostwire tarball. Similar to the
jdiskreport package. Everything works fine on the systems I've tried.

I've made myself the maintainer.
Also upgraded it to 6.0.0 as it was released stable.

pkgs/applications/networking/p2p/frostwire/default.nix

@@ -0,0 +1,36 @@
+{ stdenv, fetchurl, jre }:
+
+with stdenv.lib;
+
+stdenv.mkDerivation rec {
+  version = "6.0.0";
+  name = "frostwire-${version}";
+
+  src = fetchurl {
+    url = "http://dl.frostwire.com/frostwire/${version}/frostwire-${version}.x86_64.tar.gz";
+    sha256 = "73d6e3db9971becf1c5b7faf12b62fa3ac0a243ac06b8b4eada9118f56990177";
+  };
+
+  inherit jre;
+
+  installPhase = ''
+    jar=$(ls */*.jar)
+    
+    mkdir -p $out/share/java
+    mv $jar $out/share/java
+    
+    mkdir -p $out/bin
+    cat > $out/bin/frostwire <<EOF
+    #! $SHELL -e
+    exec $out/share/java/frostwire
+    EOF
+    chmod +x $out/bin/frostwire
+  '';
+
+  meta = {
+    homepage = http://www.frostwire.com/;
+    description = "BitTorrent Client and Cloud File Downloader";
+    license = stdenv.lib.licenses.gpl2;
+    maintainers = [ stdenv.lib.maintainers.gavin ];
+  };
+}