Missed commit. References #10554.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@8434 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activesupport/lib/active_support/base64.rb

@@ -0,0 +1,17 @@
+module ActiveSupport
+  if defined? ::Base64
+    Base64 = ::Base64
+  else
+    # Ruby 1.9 doesn't provide base64, so we wrap this here
+    module Base64
+
+      def self.encode64(data)
+        [data].pack("m")
+      end
+
+      def self.decode64(data)
+        data.unpack("m").first
+      end
+    end
+  end
+end