This is mostly a bugfix release * Fix 17 bugs, most of them securety related * Fix a number of issues uncovered by Coverity * Add meson option to enable unstable APIs and add the info to pkg-config * vtest: Stabilize protocol version 3 * Virgl: - Refactor virgl command stream decoding to check parameters early - Improve format support also for video - Add support for VIRGL_CCMD_CLEAR_SURFACE - Fall back to OpenGL when GBM mappinmg fails * Vkr/Venus: - VK_EXT_graphics_pipeline_library - add tracepoints for profiling and debugging - improve validation - Implement VIRGL_RESOURCE_FD_SHM - Introduce a new capset to require guest-based blob allocations