Merge "skins: Remove 'usemsgcache' and deprecate getDynamicStylesheetQuery"

diff --combined RELEASE-NOTES-1.32
index c32aa49,4ece115..f540de5
--- 1/RELEASE-NOTES-1.32
--- 2/RELEASE-NOTES-1.32
+++ b/RELEASE-NOTES-1.32
@@@ -323,8 -323,6 +323,8 @@@ because of Phabricator reports
  * The '--tidy' option to maintenance/parse.php has been removed.  Tidying
    the output is now the default.  Use '--no-tidy' to bypass the tidy
    phase.
 +* The global function wfErrorLog, deprecated since 1.25, has now been removed.
 +  Use MWLoggerLegacyLogger::emit or UDPTransport.
  
  === Deprecations in 1.32 ===
  * HTMLForm::setSubmitProgressive() is deprecated. No need to call it. Submit
@@@ -468,6 -466,8 +468,8 @@@
  * QuickTemplate::msgHtml() and BaseTemplate::msgHtml() have been deprecated
    as they promote bad practises. I18n messages should always be properly
    escaped.
+ * Skin::getDynamicStylesheetQuery() has been deprecated. It always
+   returns action=raw&ctype=text/css which callers should use directly.
  
  === Other changes in 1.32 ===
  * (T198811) The following tables have had their UNIQUE indexes turned into