(SCRUM) (WL#1274)


sql/item.cc:
  fixed printability of Items
sql/item.h:
  fixed printability of Items
sql/item_cmpfunc.cc:
  fixed printability of Items
sql/item_cmpfunc.h:
  fixed printability of Items
sql/item_func.cc:
  fixed printability of Items
sql/item_func.h:
  fixed printability of Items
sql/item_geofunc.h:
  added DBUG_ASSERT to catch error in debuging timw
sql/item_row.cc:
  fixed printability of Items
sql/item_row.h:
  fixed printability of Items
sql/item_strfunc.cc:
  fixed printability of Items
sql/item_strfunc.h:
  fixed printability of Items
sql/item_sum.cc:
  fixed printability of Items
sql/item_sum.h:
  fixed printability of Items
sql/item_timefunc.cc:
  fixed printability of Items
sql/item_timefunc.h:
  layout fixed
  fixed printability of Items
sql/item_uniq.h:
  fixed printability of Items
sql/sql_yacc.yy:
  layout fixed
  correct convertion to String