patch applied (hat): Fix the generation of new directory and file names in hat-trans.

Mon Jul  4 08:28:59 PDT 2005  malcolm
  * Fix the generation of new directory and file names in hat-trans.
  Previously, we assumed the source filepath always reflected the
  hierarchical module namespace, so the Hat portion was added at
  the front.  But some paths are just plain relative directories,
  in which case the Hat portion should be added at the end.

    M ./src/compiler98/OsOnly.hs -3 +24
    M ./src/hattrans/Flags.hs -2 +4
    M ./src/hattrans/HatTrans.hs -2 +1