highgui: Support to change trackbar count in setTrackbarPos and replaced deprecated CreateToolbarEx in Windows.
ability to enable OpenMP simultaneously with other parallel framework
Merge pull request #3449 from Ashod:2.4_highgui_trackbar_improvements
Merge pull request #3498 from ilya-lavrenov:omp
update android.toolchain.cmake
Merge pull request #3522 from ilya-lavrenov:update_android_toolchain_cmake