Merge pull request #4089 from lest/remove-1-8-code

remove dead code as ruby 1.9.3 has Base64 module

activesupport/lib/active_support/base64.rb

@@ -1,35 +1,7 @@
-begin
-  require 'base64'
-rescue LoadError
-end
+require 'base64'
 
 module ActiveSupport
-  if defined? ::Base64
-    Base64 = ::Base64
-  else
-    # Base64 provides utility methods for encoding and de-coding binary data
-    # using a base 64 representation. A base 64 representation of binary data
-    # consists entirely of printable US-ASCII characters. The Base64 module
-    # is included in Ruby 1.8, but has been removed in Ruby 1.9.
-    module Base64
-      # Encodes a string to its base 64 representation. Each 60 characters of
-      # output is separated by a newline character.
-      #
-      #  ActiveSupport::Base64.encode64("Original unencoded string")
-      #  # => "T3JpZ2luYWwgdW5lbmNvZGVkIHN0cmluZw==\n"
-      def self.encode64(data)
-        [data].pack("m")
-      end
-
-      # Decodes a base 64 encoded string to its original representation.
-      #
-      #  ActiveSupport::Base64.decode64("T3JpZ2luYWwgdW5lbmNvZGVkIHN0cmluZw==")
-      #  # => "Original unencoded string"
-      def self.decode64(data)
-        data.unpack("m").first
-      end
-    end
-  end
+  Base64 = ::Base64
 
   # Encodes the value as base64 without the newline breaks. This makes the base64 encoding readily usable as URL parameters
   # or memcache keys without further processing.