Issue #2045275 by Berdir: Convert user properties to methods.

core/includes/bootstrap.inc

core/includes/common.inc

core/includes/install.core.inc

core/includes/session.inc

core/lib/Drupal/Core/Password/PasswordInterface.php

core/lib/Drupal/Core/Password/PhpassHashedPassword.php

core/lib/Drupal/Core/Session/AccountInterface.php

core/lib/Drupal/Core/Session/UserSession.php

.../modules/block/lib/Drupal/block/BlockAccessController.php

core/modules/block/lib/Drupal/block/Tests/BlockCacheTest.php

core/modules/comment/comment.module

core/modules/comment/comment.tokens.inc

...ules/comment/lib/Drupal/comment/CommentFormController.php

...comment/lib/Drupal/comment/Plugin/Core/Entity/Comment.php

...comment/lib/Drupal/comment/Tests/CommentAnonymousTest.php

...comment/lib/Drupal/comment/Tests/CommentInterfaceTest.php

...les/comment/lib/Drupal/comment/Tests/CommentLinksTest.php

...s/comment/lib/Drupal/comment/Tests/CommentPreviewTest.php

...ment/lib/Drupal/comment/Tests/CommentTokenReplaceTest.php

core/modules/contact/contact.module