Tell mutt to use tokyocabinet; fixes Homebrew/homebrew#1826

Formula/mutt.rb

@@ -1,9 +1,9 @@
 require 'formula'
 
 class Mutt <Formula
-  @url='ftp://ftp.mutt.org/mutt/devel/mutt-1.5.20.tar.gz'
-  @homepage='http://www.mutt.org/'
-  @md5='027cdd9959203de0c3c64149a7ee351c'
+  url 'ftp://ftp.mutt.org/mutt/devel/mutt-1.5.20.tar.gz'
+  homepage 'http://www.mutt.org/'
+  md5 '027cdd9959203de0c3c64149a7ee351c'
   
   depends_on 'tokyo-cabinet'
 
@@ -39,6 +39,7 @@ class Mutt <Formula
           "--enable-smtp",
           "--enable-pop",
           "--enable-hcache",
+          "--with-tokyocabinet",
 
           # This is just a trick to keep 'make install' from trying to chgrp
           # the mutt_dotlock file (which we can't do if we're running as an