Instead of defining rules manually, use the included make support,
which means Makefiles are less prone to API changes, support
verbosity correctly (instead of inconsistently hardcoding --quiet),
are cleaner to read, and emit GISCAN/GICOMP instead of GEN (which
is nicer).
https://bugzilla.gnome.org/show_bug.cgi?id=643371
The library is introspected, and should not require using
Pulseaudio directly.
With help from Giovanni Campagna <scampa.giovanni@gmail.com>
(introspection annotations, build fixes)
https://bugzilla.gnome.org/show_bug.cgi?id=629455