PROPOSAL: Put DiffArray in its own diffarray package

[Ian Lynagh]

Hi all,

Proposal:
    Put DiffArray in its own diffarray package
    http://hackage.haskell.org/trac/ghc/ticket/3370

DiffArray currently has serious performance problems; see
    http://hackage.haskell.org/trac/ghc/ticket/2727
and is not currently being actively maintained. However, as part of the
corelib array it gives the impression that it is a "blessed" library.

I propose that we split DiffArray off into its own diffarray package.
This also has the advantage that it can then be maintained by a separate
maintainer, if someone is interested, and it will be decoupled from
GHC's major release schedule.

Deadline: 26 July (2 weeks).


Thanks
Ian