Changed string concatenation+, because ParseTree doesn't understand inline string concatenation

lib/paperclip.rb

@@ -235,8 +235,8 @@ module Paperclip
 
     # Adds errors if thumbnail creation fails. The same as specifying :whiny_thumbnails => true.
     def validates_attachment_thumbnails name, options = {}
-      warn('[DEPRECATED] validates_attachment_thumbnail is deprecated. '
-           'This validation is on by default and will be removed from future versions. '
+      warn('[DEPRECATION] validates_attachment_thumbnail is deprecated. ' +
+           'This validation is on by default and will be removed from future versions. ' +
            'If you wish to turn it off, supply :whiny => false in your definition.')
       attachment_definitions[name][:whiny_thumbnails] = true
     end

lib/paperclip/attachment.rb

@@ -199,8 +199,8 @@ module Paperclip
     # style as arguments. This hash can be added to with your own proc if
     # necessary.
     def self.interpolations
-      warn('[DEPRECATION] Paperclip::Attachment.interpolations is deprecated '
-           'and will be removed from future versions. '
+      warn('[DEPRECATION] Paperclip::Attachment.interpolations is deprecated ' +
+           'and will be removed from future versions. ' +
            'Use Paperclip.interpolates instead')
       Paperclip::Interpolations
     end

lib/paperclip/storage.rb

@@ -128,6 +128,8 @@ module Paperclip
     #   separate parts of your file name.
     module S3
       def self.extended base
+        warn('[DEPRECATION] S3 support through RightAWS is deprecated. S3 support will ' + 
+             'be changed to AWS::S3 in a future version.')
         require 'right_aws'
         base.instance_eval do
           @s3_credentials = parse_credentials(@options[:s3_credentials])