Merge "Introduce MovePage::moveSubpages(IfAllowed)"

diff --combined RELEASE-NOTES-1.34
index 8183145,a62c548..197d983
--- 1/RELEASE-NOTES-1.34
--- 2/RELEASE-NOTES-1.34
+++ b/RELEASE-NOTES-1.34
@@@ -38,9 -38,7 +38,9 @@@ For notes on 1.33.x and older releases
  * …
  
  ==== Removed configuration ====
 -* …
 +* $wgWikiDiff2MovedParagraphDetectionCutoff — If you still want a custom change
 +  size threshold, please specify in php.ini, using the configuration variable
 +  wikidiff2.moved_paragraph_detection_cutoff.
  
  === New user-facing features in 1.34 ===
  * …
@@@ -216,8 -214,9 +216,10 @@@ because of Phabricator reports
    and SystemBlock (for temporary blocks created by the system). SystemBlock
    should be used when creating any temporary blocks.
  * Parser::$mConf is deprecated. It will be removed entirely in a later version.
 +  Some context can be found at T224165.
  * Constructing Parser directly is deprecated. Obtain one from ParserFactory.
+ * Title::moveSubpages is deprecated. Use MovePage::moveSubpages or
+   MovePage::moveSubpagesIfAllowed.
  
  === Other changes in 1.34 ===
  * …