mysql_options(..., MYSQL_OPT_RECONNECT, ...). (Bug #11787)


client/mysqltest.c:
  Use mysql_options(..., MYSQL_OPT_RECONNECT, ...) to change reconnect
include/mysql.h:
  Add MYSQL_OPT_RECONNECT option
sql-common/client.c:
  Allow changing reconnect using MYSQL_OPT_RECONNECT.