[vala] (4 commits) Non-fast-forward update to branch wip/meson

[Rico Tzschichholz <ricotz src gnome org>]

The branch 'wip/meson' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  e493670... meson: Add initial build support
  19a56fb... meson: Add tests
  7e81fce... meson: Add vapi building
  841be4f... meson: Check suported cflags for tests

Commits added to the branch:

  a3e442f... meson: Add initial build support
  1302b9c... meson: Add tests
  5b0b05f... meson: Add vapi building
  b0c0188... meson: Check suported cflags for tests