treewide: add version to packages

Lots of packages are missing versions in their name. This adds them
where appropriate. These were found with this command:

 $ nix-env -qa -f. | grep -v '\-[0-9A-Za-z.-_+]*$' | grep -v '^hook$'

See issue #41007.

pkgs/development/libraries/libblocksruntime/default.nix

@@ -1,7 +1,7 @@
 { stdenv, fetchFromGitHub, clang }:
 
 stdenv.mkDerivation {
-  name = "blocksruntime";
+  name = "blocksruntime-20140624";
 
   src = fetchFromGitHub {
     owner = "mackyle";