Integer values with 10 digits may or may not fit into an int column 
(e.g. 2147483647 vs 6147483647).
Thus when creating a temp table column for such an int we must
use bigint instead.
Fixed to use bigint.
Also subsituted a "magic number" with a named constant.


mysql-test/r/analyse.result:
  Bug #28492: Adjusted the results after having fixed the bug
mysql-test/r/metadata.result:
  Bug #28492: test case
mysql-test/r/olap.result:
  Bug #28492: Adjusted the results after having fixed the bug
mysql-test/r/sp.result:
  Bug #28492: Adjusted the results after having fixed the bug
mysql-test/r/view.result:
  Bug #28492: Adjusted the results after having fixed the bug
mysql-test/t/metadata.test:
  Bug #28492: test case
sql/field.h:
  Bug #28492: Replaced a magic number with a constant
sql/sql_select.cc:
  Bug #28492: Treat integers with 10 and more digits as 
  bigint.