Changed the UCHAR_MAX error msg a bit:  we don't really assume anything about "characters", we assume something about C's char type (which is an integral type).
Changed the UCHAR_MAX error msg a bit:  we don't really assume anything
about "characters", we assume something about C's char type (which is
an integral type).

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator