maint: remove reference to removed woger release dependency.

* README.md: Don't mention woger -- we don't use it any more!

Signed-off-by: Gary V. Vaughan <gary@gnu.org>
configury: distribute README.md too.

* Makefile.am (EXTRA_DIST): Add README.md.

Signed-off-by: Gary V. Vaughan <gary@gnu.org>
sanity: Lua `error` does not require translatable strings.

* build-aux/sanity.mk (_gl_translatable_diag_func_re): Use
`error_` instead of `error` to avoid false matches against the
Lua `error` keyword.

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