Add version annotations to scripts

This lets tools like mix figure out which version is in path without
invoking rebar3 itself.

bootstrap

@@ -35,7 +35,7 @@ main(_) ->
     bootstrap_rebar3(),
 
     %% Build rebar.app from rebar.app.src
-    {ok, App} = rebar_app_info:new(rebar, "3.13.0", filename:absname("_build/default/lib/rebar/")),
+    {ok, App} = rebar_app_info:new(rebar, "3.13.2", filename:absname("_build/default/lib/rebar/")),
     rebar_otp_app:compile(rebar_state:new(), App),
 
     %% Because we are compiling files that are loaded already we want to silence

rebar.config

@@ -23,6 +23,7 @@
              ]}.
 
 {escript_name, rebar3}.
+{escript_comment, "%%Rebar3 3.13.2\n"}.
 {escript_emu_args, "%%! +sbtu +A1\n"}.
 %% escript_incl_extra is for internal rebar-private use only.
 %% Do not use outside rebar. Config interface is not stable.

src/rebar.app.src

@@ -3,7 +3,7 @@
 
 {application, rebar,
  [{description, "Rebar: Erlang Build Tool"},
-  {vsn, "3.13.0"},
+  {vsn, "3.13.2"},
   {modules, []},
   {registered, []},
   {applications, [kernel,

src/rebar_prv_local_install.erl

@@ -62,8 +62,9 @@ format_error(Reason) ->
     io_lib:format("~p", [Reason]).
 
 bin_contents(OutputDir) ->
+    {ok, Vsn} = application:get_key(rebar, vsn),
     <<"#!/usr/bin/env sh
-
+## Rebar3 ", (iolist_to_binary(Vsn))/binary, "
 erl -pz ", (rebar_utils:to_binary(OutputDir))/binary,"/*/ebin +sbtu +A1 -noshell -boot start_clean -s rebar3 main $REBAR3_ERL_ARGS -extra \"$@\"
 ">>.