Merged from trunk 6497:6500

   Merged from trunk 6497:6500

   +------------------------------------------------------------------------+
   | 6498      | validators++                                               |
   | WarnerBro |                                                            |
   |-----------+------------------------------------------------------------|
   | 6499      | Honestly if they are missing sys, that error message       |
   | WarnerBro | probably won't help any more than the other one (zomg      |
   |           | broken)                                                    |
   |-----------+------------------------------------------------------------|
   | 6500      | imports are one module per line, remove type module in     |
   | WarnerBro | favor of the new hotness, isinstance.                      |
   +------------------------------------------------------------------------+

svn path=/main/branches/prefix/; revision=6501