flesh out this test of polymorphism and union types,   by instantiating the red-black tree and several functions   using a few different types.
flesh out this test of polymorphism and union types,
  by instantiating the red-black tree and several functions
  using a few different types.


git-svn-id: 6b0ac017e42d307e3c8dde35033ecb159d7d210f@76 6687424e-f796-406d-b1dd-24293e5947de

samrushing/irken-compiler,samrushing/irken-compiler,samrushing/irken-compiler,samrushing/irken-compiler