* tests/sanity/bin.test: Add missing exit status on error,
and report manpage and binaries missing from spot.spec.in.
* spot.spec.in: Add ltlmix and ltlmix.1.
* bin/ltlsynt.cc: Fix formating for --algo.
* .gitignore: don't commit spot.spec
* Makefile.am: write version number to spot.spec.in
* .gitlab-ci.yml: new job builds the tarball and rpm package
* spot.spec.in: spot.spec is used by rpmbuild to build the package