Add suffix for bottles to avoid cache confusion.

Library/Contributions/examples/brew-bottle.rb

@@ -10,7 +10,7 @@ ARGV.each do|formula|
   # Get the latest version
   version = `brew list --versions #{formula}`.split.last
   source = HOMEBREW_CELLAR + formula + version
-  filename = formula + '-' + version + '.tar.gz'
+  filename = formula + '-' + version + '-bottle.tar.gz'
   ohai "Bottling #{formula} #{version}..."
   HOMEBREW_CELLAR.cd do
     # Use gzip, faster to compress than bzip2, faster to uncompress than bzip2