Remove libhandy git submodule / meson subproject
libhandy has reached a stable point, so distributions should start including it as a proper package rather than relying on a git submodule.
This also fixes some small annoyances in the build system.
libhandy has reached a stable point, so distributions should start including it as a proper package rather than relying on a git submodule.
This also fixes some small annoyances in the build system.