Log Message:
qt5: updated to 5.12.2

5.12.2:
While not adding new features, the Qt 5.12.2 release provides a number of bug
fixes and other improvements.

Compared to Qt 5.12.1, the new Qt 5.12.2 contains more than 250 bug fixes. For
details of the most important changes, please check the Change files of Qt
5.12.2.

With Qt 5.12.2 we bring back widely asked MinGW 32 bit prebuild binaries in
addition to 64 bit ones.

Qt 5.12 LTS will receive many more patch releases throughout the coming years
and we recommend all active developed projects to migrate to Qt 5.12 LTS. Qt
5.9 LTS is currently in ‘Strict’ phase and receives only the selected important
bug and security fixes, while Qt 5.12 LTS is currently receiving all the bug
fixes. With Qt 5.6 Support ending in March 2019 all active projects still using
Qt 5.6 LTS should now migrate to a later version of Qt.