build: update Makefile to new build system
build: update Makefile to new build system

Drop all the old redundant helpers, now that our CFLAGS and parameters
are set by the build-system itself. Furthermore, adjust the
dist-creation to use `meson dist`.

Signed-off-by: David Rheinsberg <1e7ff67ac6e6692b085f67edeb10803d9022c525@gmail.com>

bus1/dbus-broker