Revision control

++ Qt 5.15.2 is a bug-fix release. It maintains both forward and backward
++ compatibility (source and binary) with Qt 5.15.1.
++
++ For more details, refer to the online documentation included in this
++ distribution. The documentation is also available online:
++
++
++ The Qt version 5.15 series is binary compatible with the 5.14.x series.
++ Applications compiled for 5.14 will continue to run with 5.15.
++
++ Some of the changes listed in this file include issue tracking numbers
++ corresponding to tasks in the Qt Bug Tracker:
++
++
++ Each of these identifiers can be entered in the bug tracker to obtain more
++ information about a particular change.
++
++ ****************************************************************************
++ * Compositor *
++ ****************************************************************************
++
++ - [QTBUG-83263] Fixed a race condition on frame callback.
++ - [QTBUG-86109] Fix brcm-egl wayland integration.
++
++ ****************************************************************************
++ * QPA plugin *
++ ****************************************************************************
++
++ - [QTBUG-87657] Clipboard selection now advertises all supported mime types.
++ - [QTBUG-86291] Fixed the build with -no-opengl.
++ - [QTBUG-85767] Touchpad scrolling is no longer inverted.
++ - [QTBUG-86176] We now send subsurface expose events when a different
++ toplevel (such as a dialog) is configured.