[C2hs] patch applied (c2hs): Use standard Control.Exception.assert

[Duncan Coutts]

Thu Feb  8 14:33:56 PST 2007  Duncan Coutts <duncan.coutts at worc.ox.ac.uk>
  * Use standard Control.Exception.assert
  In preparation to remove our own version.

    M ./base/syms/Attributes.hs -12 +5
    M ./c2hs/c/CTrav.hs -5 +3