Message 95310 - Python tracker

It looks like PyUnicode_FromFormatV is computing callcount incorrectly.
It's looking for 'S', 'R', or 'A' immediately following '%', before the
width. It seems to me it should be treating them the same as 's',
although I'll admit to not having looked at it close enough to know
exactly what's going on.

The whole routine could use some attention, I think.