Octal mode

* lib/fileutils.rb (symbolic_modes_to_i): support octal mode
  string.  fix up r55513.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55524 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/fileutils.rb

@@ -812,6 +812,7 @@ module FileUtils
   private_module_function :apply_mask
 
   def symbolic_modes_to_i(mode_sym, path)  #:nodoc:
+    return mode_sym.oct if /\A[0-7]+\z/ =~ mode_sym
     mode = if File::Stat === path
              path.mode
            else