This fixes Meson's "Project does not target a minimum version but uses feature introduced in '1.1': meson.options file" warning. Silly Meson. I also added a note in the top-level meson.build to indicate `meson_version` is specified in more than one place. Change-Id: I2c04278bb46a562a1c96cd2e5e4d9ce59ce8e125