Currently, if there is no procfs mounted, test application will
fail to run any multiprocess-related autotests (EAL flags etc.)
without a clear explanation as to why this happens.
Add a check specifically for that condition, as well as add a
general stringified error message to rte_panic.
Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
b8d5e544e7