0. Setup build environment for tizen

   1) reference
      https://source.tizen.org/documentation/developer-guide/getting-started-guide/installing-development-tools?langredirect=1
      https://source.tizen.org/documentation/developer-guide/getting-started-guide/building-packages-locally-gbs?langredirect=1

   2) build command example
      gbs -c ~/gbs/gbs.conf build -B ~/gbs/GBS-ROOT/tizen_public/ -A armv7l --include-all --keep-packs --no-patch-export

   3) gbs.conf example

---------------------------------[gbs.conf]------------------------------------------------
[general]
profile = profile.tizen

[profile.tizen]
obs = obs.tizen
repos = repo.tizen.base, repo.tizen.latest

[obs.tizen]
url = http://build.tizen.org

[repo.tizen.base]
url = https://download.tizen.org/snapshots/tizen/base/latest/repos/arm/packages/

[repo.tizen.latest]
url = https://download.tizen.org/snapshots/tizen/mobile/latest/repos/arm-wayland/packages/
------------------------------------------------------------------------------------------

1. Mesa for Tizen build dependancy package on github

 download below package and build with gbs

 1) repo: https://github.com/elongbug/tizen-python-mako

 * python-mako for tizen is on progressing over tizen repository.
   ( https://review.tizen.org/git/platform/upstream/python-mako )

2. Mesa runtime dependancy package for rpi3 on tizen

 1) RPI3 tbm backend ( tbm vc4 backend)
    repo: git://git.tizen.org/platform/adaptation/broadcom/libtbm-vc4
    branch: tizen

 2) RPI3 tdm backend ( tdm vc4(drm) backend)
    repo: https://review.tizen.org/git/platform/adaptation/broadcom/libtdm-vc4
    repo: git://git.tizen.org/platform/adaptation/broadcom/libtdm-vc4
    branch: tizen