Walter Schneider

remounting dev with rslave is sufficient, otherwise /dev/pts on my host was unmounted with piimg umount as well

Building qt4 fails. `make MXE_TARGETS=x86_64-w64-mingw32.static qt` ``` kernel/qapplication_win.cpp:2638:13: error: 'GESTUREINFO' was not declared in this scope 2638 | GESTUREINFO gi; | ^~~~~~~~~~~ kernel/qapplication_win.cpp:2639:21: error: 'gi' was not declared in this...