patch applied (packages/stm): Make it build with base 3 and 4

[Ian Lynagh]

Tue Oct 21 19:42:05 PDT 2008  Duncan Coutts <duncan at haskell.org>
  * Make it build with base 3 and 4
  Uses exactly the same code as before for base 3. So no code changes.
  For ghc-6.10 it is forced to always use base4 so there's no way to
  build the package two different ways for a single ghc version.

    M ./Control/Sequential/STM.hs +14
    M ./stm.cabal -1 +10

View patch online:
http://darcs.haskell.org/packages/stm/_darcs/patches/20081022024205-adfee-861924b0eba282e77fef26d472ea151bcadc7c62.gz