Patch to fix up urjtag python3 support

urjtag-python3fix.patch

diff -Naur urjtag-2018.09.orig/bindings/python/chain.c urjtag-2018.09/bindings/python/chain.c
--- urjtag-2018.09.orig/bindings/python/chain.c	2018-09-25 14:32:40.583308869 -0700
+++ urjtag-2018.09/bindings/python/chain.c	2018-09-25 14:33:31.924518776 -0700
@@ -243,7 +243,7 @@
 urj_pyc_partid (urj_pychain_t *self, PyObject *args)
 {
     urj_chain_t *urc = self->urchain;
-    int partno;
+    unsigned int partno;
     if (!PyArg_ParseTuple (args, "i", &partno))
         return NULL;
 

diff -Naur urjtag-2018.09.orig/bindings/python/register.c urjtag-2018.09/bindings/python/register.c
--- urjtag-2018.09.orig/bindings/python/register.c	2018-09-25 14:32:40.583308869 -0700
+++ urjtag-2018.09/bindings/python/register.c	2018-09-25 14:35:10.558794872 -0700
@@ -52,9 +52,13 @@
     if (self->urreg == NULL || self->inst == NULL)
         snprintf (buf, 200, "<urjtag.register chain=%p invalid>", urc);
     else
-        snprintf (buf, 200, "<urjtag.register chain=%p reg=%s inst=%s>", urc, 
+        snprintf (buf, 200, "<urjtag.register chain=%p reg=%s inst=%s>", urc,
              self->urreg->name, self->inst->name);
+#if PY_MAJOR_VERSION >= 3
+    return PyUnicode_FromString (buf);
+#else
     return PyString_FromString (buf);
+#endif
 }