Change escriptize archive permissions to a+x

By default, executables in paths such as /bin and /usr/local/bin have
the mode saying they can be executed by all.

The current version of escriptize only sets u+x, which creates problems
when copied directly in repositories and requiring other programs to
interact with them.

This change makes rebar follow the standard of linuxes and unixes by
setting the permission flag to a+x, allowing users, the group and others
to execute it.

src/rebar_escripter.erl

@@ -84,7 +84,7 @@ escriptize(Config, AppFile) ->
 
     %% Finally, update executable perms for our script
     {ok, #file_info{mode = Mode}} = file:read_file_info(Filename),
-    ok = file:change_mode(Filename, Mode bor 8#00100),
+    ok = file:change_mode(Filename, Mode bor 8#00111),
     ok.
 
 clean(Config, AppFile) ->