Add changes file for Qt 5.12.5

+ b22049ea14 qdoc: Add id attribute for all HTML headings
+ c7f96f5301 Close the last SELECT query with pending results
+ 0d2a9408ed lupdate: Improve documentation of -recursive, -no-recursive
+ fcb96af021 distancefieldgenerator: Fix cmap error for some fonts
+ 8e7db0dd1c distancefieldgenerator: Avoid exceeding max texture size
+ d7e346b582 distancefieldgenerator: Remove unused variable
+ a05eb13241 distancefieldgenerator: Fix crash with multiple textures
+ 73ecd39deb distancefieldgenerator: Fix failure reading CMAP for some fonts
+ 2ecbaa7c29 Qt Linguist: Document CMake macros
+ e42dd0a13e qdoc: Avoid duplicating version strings in HTML <title> element
+ 86f264b491 Bump version
+ a979062787 CMake: Ensure unique lst file name in qt5_create_translation
+ a690022b7e Qt Designer: Enable editing of current dates
+ 40a7f2c646 distancefieldgenerator: Fix garbled text with large fonts on little endian

Change-Id: I9dcfc3d86ec7744aadeb24e4fc1b293503373d86
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>

dist/changes-5.12.5

@@ -0,0 +1,37 @@
+Qt 5.12.5 is a bug-fix release. It maintains both forward and backward
+compatibility (source and binary) with Qt 5.12.0 through 5.12.4.
+
+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 5.12 series is binary compatible with the 5.11.x series.
+Applications compiled for 5.11 will continue to run with 5.12.
+
+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.
+
+****************************************************************************
+*                          distancefieldgenerator                          *
+****************************************************************************
+
+ - [QTBUG-76188] Fixed bug where the tool would fail for valid fonts with
+   the message "end of cmap table reached when parsing subtable".
+ - [QTBUG-76528] Fixed a bug where the generated textures might exceed the
+   maximum height.
+ - [QTBUG-76188][QTBUG-76528] Fixed possible crash when generating large
+   number of glyphs with a small texture size.
+ - [QTBUG-77501] Fixed broken text rendering when generating large glyph
+   sets.
+
+****************************************************************************
+*                                 Qt Help                                  *
+****************************************************************************
+
+ - [QDS-779] Fixed possible application freeze when using QtHelp module.