specs: remove debug code.

* specs/mkrockspecs_spec.yaml: Remove debug code.

Signed-off-by: Gary V. Vaughan <gary@gnu.org>
configury: adopt semantic versioning.

* configure.ac (AC_INIT): Bump version to 9.0.0.
* build-aux/merge-sections: Regenerate.

Signed-off-by: Gary V. Vaughan <gary@gnu.org>