gcc: update to 4.8.x branch to 4.8.2

pkgs/development/compilers/gcc/4.8/default.nix

···
 with stdenv.lib;
 with builtins;
 
-let version = "4.8.1";
+let version = "4.8.2";
 
     # Whether building a cross-compiler for GNU/Hurd.
     crossGNU = cross != null && cross.config == "i586-pc-gnu";
···
 
   src = fetchurl {
     url = "mirror://gnu/gcc/gcc-${version}/gcc-${version}.tar.bz2";
-    sha256 = "04sqn0ds17ys8l6zn7vyyvjz1a7hsk4zb0381vlw9wnr7az48nsl";
+    sha256 = "1j6dwgby4g3p3lz7zkss32ghr45zpdidrg8xvazvn91lqxv25p09";
   };
 
   inherit patches;