Revert "Merge pull request #6354 from lest/patch-1"

This reverts commit e8feaff60b, reversing
changes made to 9adf28c026.

Reason: This broke the actionmailer tests

activesupport/lib/active_support/core_ext/string/access.rb

@@ -1,3 +1,5 @@
+require 'active_support/multibyte'
+
 class String
   # If you pass a single Fixnum, returns a substring of one character at that
   # position. The first character of the string is at position 0, the next at

activesupport/lib/active_support/core_ext/string/filters.rb

@@ -1,3 +1,5 @@
+require 'active_support/core_ext/string/multibyte'
+
 class String
   # Returns the string, first removing all whitespace on both ends of
   # the string, and then changing remaining consecutive whitespace

activesupport/lib/active_support/inflector/transliterate.rb

@@ -1,5 +1,5 @@
 # encoding: utf-8
-require 'active_support/multibyte'
+require 'active_support/core_ext/string/multibyte'
 require 'active_support/i18n'
 
 module ActiveSupport