rdbms: deprecate ISQLPlatform::tableNamesN()

Change-Id: I838af610047bcb71e4155cd0e1f52a0062f6f651

RELEASE-NOTES-1.43

@@ -114,6 +114,7 @@ because of Phabricator reports.
 * Using the "post" source in parameter declarations returned from
   Handler::getParamSettings() is deprecated, use "body" instead.
 * IMaintainableDatabase::textFieldSize() is now deprecated.
+* ISQLPlatform::tableNamesN() is now deprecated.
 * …
 
 === Other changes in 1.43 ===

includes/libs/rdbms/platform/ISQLPlatform.php

@@ -590,6 +590,8 @@ interface ISQLPlatform {
 	 *
 	 * @param string ...$tables
 	 * @return array
+	 * @deprecated Since 1.43; if you must format table names,
+	 *  write several calls to {@link tableName}.
 	 */
 	public function tableNamesN( ...$tables );