Added the test case for bug#21677: Wrong result when comparing a DATE and a DATETIME in BETWEEN
  Corrected a test case after removal of fix for bug#16377
query_cache.result, func_time.test, view.result, view.test, func_time.result:
  Corrected a test case after removal of fix for bug#16377
type_date.test:
  Added the test case for bug#21677: Wrong result when comparing a DATE and a DATETIME in BETWEEN
   Corrected a test case after removal of fix for bug#16377
item_cmpfunc.cc:
  Removed changes to the Item_func_between::fix_length_and_dec() made in the fix for bug#16377