tap/untap: use Array#length, not #count

Array#count was apparently introduced in 1.8.7.

Library/Homebrew/cmd/tap.rb

@@ -29,7 +29,7 @@ module Homebrew extend self
     files = []
     tapd.find_formula{ |file| files << tapd.basename.join(file) }
     link_tap_formula(files)
-    puts "Tapped #{files.count} formula"
+    puts "Tapped #{files.length} formula"
 
     # Figure out if this repo is private
     # curl will throw an exception if the repo is private (Github returns a 404)

Library/Homebrew/cmd/untap.rb

@@ -21,7 +21,7 @@ module Homebrew extend self
     tapd.find_formula{ |file| files << Pathname.new("#{user}-#{repo}").join(file) }
     unlink_tap_formula(files)
     rm_rf tapd
-    puts "Untapped #{files.count} formula"
+    puts "Untapped #{files.length} formula"
   end
 
   def unlink_tap_formula formulae