meta.function -> passthru.function, not killing other contents of passthru

svn path=/nixpkgs/trunk/; revision=13190

pkgs/applications/audio/ladspa-plugins/default.nix

@@ -1,5 +1,5 @@
 args: with args;
-	let localDefs = builderDefs.meta.function {
+	let localDefs = builderDefs.passthru.function {
 		src = 
 		fetchurl {
 			url = http://plugin.org.uk/releases/0.4.15/swh-plugins-0.4.15.tar.gz;

pkgs/applications/audio/ladspa-plugins/ladspah.nix

@@ -6,7 +6,7 @@ let
 		sha256 = "1b908csn85ng9sz5s5d1mqk711cmawain2z8px2ajngihdrynb67";
 	};
 in
-	let localDefs = builderDefs.meta.function {
+	let localDefs = builderDefs.passthru.function {
 		buildInputs = [];
 		inherit src;
 	};