patch applied (ghc): mkIfaceExports: sort the children of AvailTC

[Simon Marlow]

Tue Oct  2 04:49:17 PDT 2007  Simon Marlow <simonmar at microsoft.com>
  * mkIfaceExports: sort the children of AvailTC
  This fixes a problem with spurious recompilations: each time a module
  was recompiled, the order of the children would change, causing extra
  recompilation.
  
  MERGE TO STABLE

    M ./compiler/iface/MkIface.lhs -1 +2