Add additional information on exceptions from time.mktime() and related to improper time tuples passed to various functions.  Based on comments from Andreas Jung.
Add additional information on exceptions from time.mktime() and related to
improper time tuples passed to various functions.  Based on comments from
Andreas Jung.

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