[packages/Mesa] (6 commits) ...Merge branch 'Mesa-18.3'

[jajcus]

Summary of changes:

  1ea9613... Version: 18.3.0, build with meson (*)
  4ce9383... Builds now, but without OpenCL (*)
  ce7a974... Version: 18.3.1 (*)
  07725da... re-enable OpenCL (*)
  93f3c4e... Version: 18.3.2 (*)
  9331bc8... Merge branch 'Mesa-18.3'

(*) This commit already existed in another branch; no separate mail sent