Issue #2905641 by klabowterman: Wrong unit given in documentation for parameter delay in LockBackendInterface::wait

Issue #808416 by lostchord, daniels220, gaurav.kapoor, jp.stacey, JacobSanford, er.pushpinderrana, jhodgdon, oriol_e9g, kiwimind, Dries: Document that clock drift will cause lock system to fail

Issue #2776975 by joelpittet, dawehner, tim.plunkett, xjm, pfrenssen: March 3, 2017: Convert core to array syntax coding standards for Drupal 8.3.x RC phase

Issue #2708185 by anoopjohn: Fix 'Drupal.Commenting.FunctionComment' coding standard - Issues related to spacing and styling

Issue #2719695 by alexpott, Mile23: Fix 'Drupal.Classes.ClassDeclaration.CloseBraceAfterBody' coding standard

Issue #2665992 by alexpott, klausi, heykarthikwithu, xjm, tstoeckler: @file is not required for classes, interfaces and traits

Issue #2664302 by alexpott: Semaphore table is only used by a core service but it depends on system install

Issue #2624256 by roderik, jhodgdon, dawehner: Fix mention of menu_router_rebuild() in LockBackendInterface comment

Issue #2502621 by Pravin Ajaaz, hussainweb, Peacog, jhodgdon, ivanjaros: Replace implement notes with inheritdoc tag

Issue #1392754 by tss, justAChris, jhodgdon: Comply with new documentation standards for @file for namespaced class files

Issue #2205527 by cilefen, alexpott, martin107, Xen, Gaelan, clintrandall777@gmail.com: Fixed Move configuration import lock to lock.persistent service since a lock can not exist beyond a single request.

Issue #2334689 by er.pushpinderrana | joachim: Fixed lock_acquire() should give the character limit for the lock name.

Issue #2044367 by InternetDevels, Berdir, wildflower_0002, ianthomas_uk, ParisLiakos, Xano | cosmicdreams: Replace calls to lock() with \Drupal::lock().

Fixes #1567444 - Wrong exception (PDOException) was in a catch statement instead of DatabaseException - thanks for aspilicious's help