Release Spot 2.7

* configure.ac, NEWS, doc/org/setup.org: Bump version.
10 jobs for master
Status Name Job ID Coverage
  Build
canceled alpine-gcc #25373

canceled arch-clang #25374

canceled arch-gcc-glibcxxdebug #25375

canceled debian-gcc-snapshot #25372

canceled debian-stable-gcc #25370

canceled debian-unstable-gcc-coverage #25371

canceled debpkg-stable #25378

canceled mingw-shared #25376

canceled mingw-static #25377

canceled rpm-pkg #25379