[Yhc] darcs patch: Implement IdSupply for real (and 5 more)

[Samuel Bronson]

Oh, by the way, this is for review mostly. I could push it if I
wanted. I already pushed my 45 patches to make Id a newtype instead of
a type synonym.

On 10/3/06, Samuel Bronson <naesten at gmail.com> wrote:
> Tue Oct  3 13:25:52 EDT 2006  Samuel Bronson <naesten at gmail.com>
>   * Implement IdSupply for real
>
> Tue Oct  3 14:15:25 EDT 2006  Samuel Bronson <naesten at gmail.com>
>   * Begin turning ImportState into a record type...
>
> Tue Oct  3 16:44:31 EDT 2006  Samuel Bronson <naesten at gmail.com>
>   * Refactor ImportState and IExtract some
>
> Tue Oct  3 17:07:19 EDT 2006  Samuel Bronson <naesten at gmail.com>
>   * Refactor IExtract.importData to use the pseudo-monad
>
> Tue Oct  3 18:52:05 EDT 2006  Samuel Bronson <naesten at gmail.com>
>   * More refactoring in IExtract
>
> Tue Oct  3 19:53:00 EDT 2006  Samuel Bronson <naesten at gmail.com>
>   * Refactor IExtract.importField