Merge 'staging' into closure-size

- there were many easy merge conflicts
- cc-wrapper needed nontrivial changes

Many other problems might've been created by interaction of the branches,
but stdenv and a few other packages build fine now.

pkgs/applications/audio/flac/default.nix

@@ -1,11 +1,11 @@
 { stdenv, fetchurl, libogg }:
 
 stdenv.mkDerivation rec {
-  name = "flac-1.3.0";
+  name = "flac-1.3.1";
 
   src = fetchurl {
     url = "http://downloads.xiph.org/releases/flac/${name}.tar.xz";
-    sha256 = "1p0hh190kqvpkbk1bbajd81jfbmkyl4fn2i7pggk2zppq6m68bgs";
+    sha256 = "4773c0099dba767d963fd92143263be338c48702172e8754b9bc5103efe1c56c";
   };
 
   buildInputs = [ libogg ];
@@ -18,6 +18,6 @@ stdenv.mkDerivation rec {
     homepage = http://xiph.org/flac/;
     description = "Library and tools for encoding and decoding the FLAC lossless audio file format";
     platforms = platforms.all;
-    maintainers = maintainers.mornfall;
+    maintainers = [ maintainers.mornfall ];
   };
 }