mesa: Update 18.1.9 -> 18.3.4

mesa: Update 18.1.9 -> 18.3.4

  - Refresh all patches.

  - Remove "Use Python 3 to execute the scripts" patch
      Commit 986033a2750c1160a4cef3c8418fc7f9e2b4fb5a add support
      for both python 2 and 3.

  - Remove "dri: i965: Add missing time.h include" patch
      Commit 3c288da5eec81ee58b85927df18d9194ead8f5c2 add time.h
      header file.

  - Remove --enable-texture-float.
      Commit 66673bef941af344314fe9c91cad8cd330b245eb remove option to
      unconditionally enable floating-point textures.

  - Commit 30b10dbb7c6f6bdf3e489620f8333c727bd3a6dd moved
    ${sysconfdir}/drirc to ${datadir}/drirc.d/00-mesa-defaults.conf
    Add 00-mesa-defaults.conf to mesa-megadriver package

  - Stop removing ${sysconfdir}/drirc on do_install_append

  - Fix upgrade path from mesa to mesa-megadriver

  - Add patch to fix mesa-native build

  - Add xrandr to X11_DEPS

Signed-off-by: Fabio Berton <fabio.berton@ossystems.com.br>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>