[GHC] #615: Remove uses of ccall from PackedString

[GHC]

#615: Remove uses of ccall from PackedString
-----------------------------+----------------------------------------------
  Reporter:  simonmar        |          Owner:         
      Type:  task            |         Status:  closed 
  Priority:  normal          |      Milestone:         
 Component:  libraries/base  |        Version:  None   
  Severity:  normal          |     Resolution:  wontfix
  Keywords:                  |             Os:  Unknown
Difficulty:  Unknown         |   Architecture:  Unknown
-----------------------------+----------------------------------------------
Changes (by simonmar):

  * architecture:  => Unknown
  * resolution:  None => wontfix
  * difficulty:  => Unknown
  * status:  new => closed
  * os:  => Unknown

Old description:

> {{{
> PackedString still uses ccall which is deprecated.  It should use the new
> FFI libraries instead.
> }}}

New description:

 {{{
 PackedString still uses ccall which is deprecated.  It should use the new
 FFI libraries instead.
 }}}

Comment:

 We'll pull in the new FastPackedString when it's ready.

-- 
Ticket URL: <http://cvs.haskell.org/trac/ghc/ticket/615>
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