specl: SPECL_OPTS now works correctly.

* GNUmakefile (SPECL_OPTS): Append the verbose option, even when
there are additional user-defined SPECL_OPTS.
* NEWS: Update.

Signed-off-by: Gary V. Vaughan <gary@gnu.org>
announcement: show luarocks install command correctly.

* build-aux/release.mk (announcement): Format improvements.
* NEWS: Update.

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