Add 'U'/'U#' format characters to Py_BuildValue (and thus to PyObject_CallFunction()) that take a char * (and a size in the case of 'U#') and create a unicode object out of it. Add functions PyUnicode_FromFormat() and PyUnicode_FromFormatV() that work similar to PyString_FromFormat(), but create a unicode object (also a %U format character has been added, that takes a PyObject *, which must point to a unicode object). Change the encoding and reason attributes of UnicodeEncodeError, UnicodeDecodeError and UnicodeTranslateError to be unicode objects.

/* A perhaps slow but I hope correct implementation of memmove */

extern char *memcpy(char *, char *, int);

char *
memmove(char *dst, char *src, int n)
{
	char *realdst = dst;
	if (n <= 0)
		return dst;
	if (src >= dst+n || dst >= src+n)
		return memcpy(dst, src, n);
	if (src > dst) {
		while (--n >= 0)
			*dst++ = *src++;
	}
	else if (src < dst) {
		src += n;
		dst += n;
		while (--n >= 0)
			*--dst = *--src;
	}
	return realdst;
}