New item created in find_field_in_table() to fix view's item, was created 
without taking into account original item's alias. This patch checks if alias 
is set to the original item and if so sets it to newly created item.


sql/sql_base.cc:
  Fix bug#11399 Alias wasn't set on view column
mysql-test/t/view.test:
  Test case for bug#11399 Use an alias in a select statement on a view
mysql-test/r/view.result:
  Test case for bug#11399 Use an alias in a select statement on a view