long fraction and/or large exponent part".


mysql-test/r/type_time.result:
  Fixed testcases results (bug #12440)
mysql-test/t/type_time.test:
  Added testcases for bug #12440
sql-common/my_time.c:
  Fixed bug #12440: "Incorrect processing of time values containing
   long fraction and/or large exponent part".
   Modified str_to_time(). Process properly fraction part containing
   more than 6 digits. Check for existence of exponent part which
   may result from %g formatting applied to time value specified as
   large real number.