QT Library very slow on Windows Compact Embedded 7 (WEC7) platforms.

With latest updates of WEC7, the function qt_wince_is_platform() present in src\gui\kernel\qguifunctions_wince.cpp is causing a heavy degradation of performance by slowing down all UI operations.

The cause is the call of SystemParametersInfo() with a deprecated funcionality: instead of calling SystemParametersInfo(SPI_GETPLATFORMTYPE, .... if you changed the code with call SystemParametersInfo(SPI_GETPLATFORMNAME, ... the funcionality is the same but the degradation will disappears!

The problem is present also in the Qt 5.x tree.