Merge pull request #16935 from owncloud/allow-app-check-code-for-deprecated-classes

core/command/app/checkcode.php

lib/private/app/codechecker/abstractcheck.php

lib/private/app/codechecker/codechecker.php

lib/private/app/codechecker/deprecationcheck.php

lib/private/app/codechecker/emptycheck.php

lib/private/app/codechecker/icheck.php

lib/private/app/codechecker/nodevisitor.php

lib/private/app/codechecker/privatecheck.php

lib/private/app/codechecker/strongcomparisoncheck.php

.../data/app/code-checker/test-deprecated-constant-alias.php

...a/app/code-checker/test-deprecated-constant-sub-alias.php

tests/data/app/code-checker/test-deprecated-constant-sub.php

tests/data/app/code-checker/test-deprecated-constant.php

.../data/app/code-checker/test-deprecated-function-alias.php

...a/app/code-checker/test-deprecated-function-sub-alias.php

tests/data/app/code-checker/test-deprecated-function-sub.php

tests/data/app/code-checker/test-deprecated-function.php

tests/data/app/code-checker/test-deprecated-method.php

tests/data/app/code-checker/test-deprecated-use-alias.php

...s/data/app/code-checker/test-deprecated-use-sub-alias.php