patch applied (ghc): Adding new ffi calls into the Hpc rts subsystem

[Andy Gill]

Tue Jun 12 00:46:55 PDT 2007  andy at galois.com
  * Adding new ffi calls into the Hpc rts subsystem
  
  foreign import ccall unsafe hs_hpc_write :: CString -> IO ()
  foreign import ccall unsafe hs_hpc_read  :: CString -> IO ()
  
  These write a Hpc description of the state of the world to a file, 
  or read a description into the current Hpc tickbox subsystem.
  

    M ./includes/RtsExternal.h +2
    M ./rts/Hpc.c -94 +117