[m-rev.] for review: fix problems with the char module

[Julien Fischer]

On Thu, 11 Sep 2014, Peter Wang wrote:

> On Thu, 11 Sep 2014 14:59:57 +1000 (EST), Julien Fischer <jfischer at opturion.com> wrote:
>>
>> On Thu, 11 Sep 2014, Peter Wang wrote:
>>
>>> On Wed, 10 Sep 2014 17:36:38 +1000 (EST), Julien Fischer <jfischer at opturion.com> wrote:
>>>>
>>>>      Mark the following as obsolete:
>>>>          - is_hex_digit/2
>>>>          - int_to_hex_char/2
>>>>          - int_to_digit/2
>>>>          - det_int_to_digit/1
>>>>          - det_int_to_digit/2
>>>
>>> It's probably the right thing to do, but the is_hex_digit and
>>> int_to_hex_char deprecations will be annoying :(
>>
>> We can make them obsolete by comment only for now if you think the
>> presence of the pragmas will be particularly annoying.  I don't intend
>> to actually remove any of these for at least several release.
>
> Alright.  Honestly what I'll probably do is use my own replacement
> predicates for a while.

I've removed the obsolete pragmas for those two for now.  I've also
shifted all the deprecated predicates and functions to a section of
their own at the end of the interface.

Cheers,
Julien.