"Item_date_add_interval needs to have the int_type member as Public".
As explained in the bug report, this change is is to help http://search.cpan.org/~philips/DBIx-MyParse-0.20/
So please keep those members public.


sql/item_func.h:
  declaring some class members public for BUG#12377
sql/item_strfunc.h:
  declaring some class members public for BUG#12377
sql/item_timefunc.h:
  declaring some class members public for BUG#12377