Merge changes from topic 'mesa-rebase'

* changes:
  Don't use gralloc_drm headers
  Precompile intermediate sources
  Android: drop Android 4.4 (KitKat) support
  Android: kill off {MESA_}ANDROID_VERSION defines aka Android 4.1 and older
  CHROMIUM: egl/android: Support opening render nodes from within EGL
  FROMLIST: egl/android: Make drm_gralloc headers optional (v2)
  Merge tag 'mesa-17.0.4' from upstream git