* build-aux/gitlab-ci.yml (before_script): Install 'git'.
* build-aux/gitlab-ci.yml (before-script): Use a variable for the Guile package version. (test): Rename this... (test-guile-2.2): ...to this and set the Guile version variable. (test-guile-2.0): New job.
* build-aux/gitlab-ci.yml (before-script): Install texinfo.
* build-aux/gitlab-ci.yml, build-aux/pre-inst-env.in, configure.ac, test.sh, tests/spec/Makefile.am, tests/spec/check-spec: Add copyright notices and GPLv3+ license notice. * guix.scm: Add a "special exception" permissive license notice. * doc/syntax.txt: Add title, introduction, copyright notice, and a simple all-permissive license. * COPYING.CC0: New file. * NEWS: Reformat and add CC0 license notice. * README: Add CC0 license notice. * Makefile.am: Add copyright notices and GPLv3+ license notice. (EXTRA_DIST): Add COPYING.CC0.
* configure.ac: Add a more robust check for 'guild'. * build-aux/gitlab-ci.yml: Do not make a 'guild' symlink.
* build-aux/gitlab-ci.yml: New file. * .gitignore: Do not ignore it.