Issue #1774104 by sun: Replace all trivial drupal_write_record() calls with db_merge().

...odules/file/lib/Drupal/file/Tests/FileManagedTestBase.php

core/modules/file/lib/Drupal/file/Tests/SpaceUsedTest.php

...dules/locale/lib/Drupal/locale/Tests/LocaleUpdateBase.php

core/modules/locale/locale.module

core/modules/menu_link/menu_link.api.php

...modules/node/lib/Drupal/node/Tests/NodeQueryAlterTest.php

core/modules/node/node.api.php

core/modules/system/entity.api.php

...les/system/lib/Drupal/system/Tests/Module/InstallTest.php

...ules/system/tests/modules/module_test/module_test.install

...modules/views/lib/Drupal/views/Tests/Plugin/CacheTest.php