Merge remote-tracking branch 'origin/5.13.1' into 5.13

Change-Id: I4bbd94f088980f3f742299a0ad687cf7149b369b

dist/changes-5.13.1

+Qt 5.13.1 is a bug-fix release. It maintains both forward and backward
+compatibility (source and binary) with Qt 5.13.0.
+
+For more details, refer to the online documentation included in this
+distribution. The documentation is also available online:
+
+https://doc.qt.io/qt-5/index.html
+
+The Qt version 5.13 series is binary compatible with the 5.12.x series.
+Applications compiled for 5.12 will continue to run with 5.13.
+
+Some of the changes listed in this file include issue tracking numbers
+corresponding to tasks in the Qt Bug Tracker:
+
+https://bugreports.qt.io/
+
+Each of these identifiers can be entered in the bug tracker to obtain more
+information about a particular change.
+
+ - This release contains only minor code improvements.

doc/src/legal/licensechanges.qdoc

@@ -34,6 +34,17 @@
     Changes in Qt and \l{Licenses Used in Qt}{Third Party Modules}
     released with Qt that are relevant to licensing.
 
+    \section1 Qt 5.13.1
+
+    \section2 Qt Core Module
+
+    \l{Unicode Common Locale Data Repository (CLDR)} got updated to
+            upstream version v35.1
+
+    \section2 Qt Image Formats
+
+    \l{WebP (libwebp)} got updated to upstream version 1.0.3.
+
     \section1 Qt 5.13.0
 
     \section2 Qt Core Module