Support Python 3k

This is attempt to support Python 3k in biggles (see #42). Note that the branch is **not ready to be merged**. Although the code in this branch compiles, it still segfaults at runtime. The purpose of this pull request is to make the code review easier.
OK, really sorry, I'm talking a bit of nonsense; the ref counting is
not because of the dict, but the conversion.

Anyway, easier to let python do the conversion.

I shouldn't try to do this on my phone at a bar while drinking beer :)

-e

On 8/22/14, Erin Sheldon <erin.sheldon@gmail.com> wrote:
> I'm saying it would be better to create the object and then set the
> parameters one at a time with a method call.  Currently the parameters
> are all being set at the same time the object is created using this
> dict.
>
> A method call one at a time can be made type and memory safe with no
> difficulties.
>
> But dict access in C requires doing all this manual reference counting.
>
> See here for an example using the parsetuple
>
> https://github.com/esheldon/fitsio/blob/master/fitsio/fitsio_pywrap.c#L236
>
> the string is automatically converted and does not need to be freed.
>
> I will happily implement this if you want.
> -e
>
> On 8/22/14, Matt <notifications@github.com> wrote:
>>> @@ -198,9 +200,13 @@ new( PyObject *self, PyObject *args )
>>>  		pos = 0;
>>>  		while ( PyDict_Next( odict, &pos, &key, &value ) )
>>>  		{
>>> -			skey = PyString_AsString( key );
>>> -			svalue = PyString_AsString( value );
>>> +			PyObject* tmp;
>>
>> Totally confused by your comment @esheldon.
>>
>> ---
>> Reply to this email directly or view it on GitHub:
>> https://github.com/nolta/biggles/pull/44/files#r16626772
>
>
> --
> Erin Scott Sheldon
> Brookhaven National Laboratory erin dot sheldon at gmail dot com
>


-- 
Erin Scott Sheldon
Brookhaven National Laboratory erin dot sheldon at gmail dot com