Add fink/macports support to 'brew search'.

bin/brew

@@ -129,6 +129,12 @@ begin
       end
 
     when 'search', '-S'
+      if ARGV.include? '--macports'
+        exec "open", "http://www.macports.org/ports.php?by=name&substr=#{ARGV.next}"
+      elsif ARGV.include? '--fink'
+        exec "open", "http://pdb.finkproject.org/pdb/browse.php?summary=#{ARGV.next}"
+      end
+
       check_for_blacklisted_formula(ARGV.named)
       puts_columns search_brews(ARGV.first)