maint: distribute README.md.

* Makefile.am (EXTRA_DIST): Add README.md.
(old_NEWS_hash): Move into bootstrap section of the file.

Signed-off-by: Gary V. Vaughan <gary@gnu.org>
configury: remove unused auxdir macro.

* Makefile.am (auxdir): Remove.

Signed-off-by: Gary V. Vaughan <gary@gnu.org>
configury: remove needless subdir-objects option.

* configure.ac (AM_INIT_AUTOMAKE): Remove subdir-objects option.
We don't have any compiled objects at all!

Signed-off-by: Gary V. Vaughan <gary@gnu.org>
portability: use {...} instead of table.pack (...).

* src/specl.in (slurp): table.pack is not supported by Lua 5.1,
so use {...} notation instead for compatibility with 5.1 and
5.2.

Signed-off-by: Gary V. Vaughan <gary@gnu.org>
travis: let luarocks install dependencies to catch any missed ones.

* travis.yml.in (script): Remove inessential rock preinstallations.
Don't forget to run self-tests.
* .travis.yml: Regenerate.

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