Toggle the Berkeley DB panic state. Setting panic to a non-zero value
causes Berkeley DB to refuse attempts to call Berkeley DB functions with the
DB_RUNRECOVERY error return.
The db_env_set_panicstate interface affects the entire application, not a single
database or database environment.
While the db_env_set_panicstate interface may be used to configure Berkeley DB at any time
during the life of the application, it should normally be called before
making any calls to the db_env_create or db_create functions.
The db_env_set_panicstate function returns a non-zero error value on failure and 0 on success.