Add correct package version for mix (#577)

.gitignore

@@ -41,3 +41,4 @@ XmppAddr.hrl
 /test/*.beam
 /logs/
 /priv/sql
+mix.exs

configure.ac

@@ -235,7 +235,8 @@ esac],[if test "x$lager" = "x"; then lager=true; fi])
 
 AC_CONFIG_FILES([Makefile
 		 vars.config
-		 src/ejabberd.app.src])
+		 src/ejabberd.app.src
+		 mix.exs])
 
 ENABLEUSER=""
 AC_ARG_ENABLE(user,

mix.exs.in

@@ -3,7 +3,7 @@ defmodule Ejabberd.Mixfile do
 
   def project do
     [app: :ejabberd,
-     version: "15.03.0",
+     version: "@PACKAGE_VERSION@",
      elixir: "~> 1.0",
      elixirc_paths: ["lib"],
      compile_path: ".",
@@ -65,7 +65,7 @@ defmodule Mix.Tasks.Compile.Asn1 do
         options = options ++ [:noobj, outdir: Erlang.to_erl_file(Path.dirname(output))]
         case :asn1ct.compile(Erlang.to_erl_file(input), options) do
           :ok -> {:ok, :done}
-          error -> error       
+          error -> error
         end
     end)
   end