Issue #2852361 by Xano, smustgrave, pwolanin, mpdonadio, wolffereast,...
Issue #2852361 by Xano, smustgrave, pwolanin, mpdonadio, wolffereast, ranjith_kumar_k_u, John Cook, xjm, alexpott: Ignore repeated slashes in the incoming path like Drupal <= 7
(cherry picked from commit 511778a7)