Merge branch 'master' into staging-next

There ver very many conflicts, basically all due to
name -> pname+version.  Fortunately, almost everything was auto-resolved
by kdiff3, and for now I just fixed up a couple evaluation problems,
as verified by the tarball job.  There might be some fallback to these
conflicts, but I believe it should be minimal.

Hydra nixpkgs: ?compare=1538299

pkgs/servers/http/nginx/generic.nix

@@ -111,6 +111,6 @@ stdenv.mkDerivation {
     homepage    = http://nginx.org;
     license     = licenses.bsd2;
     platforms   = platforms.all;
-    maintainers = with maintainers; [ thoughtpolice raskin fpletz ];
+    maintainers = with maintainers; [ thoughtpolice raskin fpletz globin ];
   };
 }