kmscube-0.0.0.git1585705428.4660a7d-bp154.1.48

- Update to version 0.0.0.git1585705428.4660a7d:
  * texturator: Fix float to bool conversion warning
  * texturator: Only define png variable when libpng is present
  * meson.build: Change c_std to gnu99
  * kmscube: add AMD_performance_monitor support
  * kmscube: also print final fps stat at exit
  * kmscube: add option to run for specified # of frames
  * add fps reporting
  * atomic: allow user input to trigger exit
  * add shadertoy mode
  * clean up arg parsing
- Switch to meson build system
- Enable libpng support

- back to Mesa-libGLESv3-devel

- Buildrequire libglvnd-devel >= 1.2.0 instead of Mesa-libGLESv3-devel
  (workaround for broken buildservice)

- Add gstreamer deps to enable cube-video (video textured
  cube support)

- Initial version 0.0.0.git1562664497.a12e306