[PATCH 1 of 5 foldmap-in-C V2] parsers: factor out most of asciilower into an internal function

[Siddharth Agarwal]

On 04/01/2015 01:59 PM, Siddharth Agarwal wrote:
> The change to Py_ssize_t is necessary because parsers.c doesn't define
> PY_SSIZE_T_CLEAN. That macro changes the behavior of PyArg_ParseTuple but not
> PyInt_AS_LONG.

Ugh, lots of wires crossed here. I meant PyBytes_GET_SIZE. Please fix
inflight if possible.