Release Spot 2.8

* configure.ac, doc/org/setup.org, NEWS: Bump version to Spot 2.8.
15 jobs for stable in 314 minutes and 48 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #53875
alpine-gcc

00:31:57

passed #53876
arch-clang

00:52:16

passed #53877
arch-gcc-glibcxxdebug

00:54:25

passed #53874
debian-gcc-snapshot

01:33:17

passed #53953
debian-stable-gcc

01:28:19

passed #53952
debian-unstable-gcc-coverage

01:14:00

90.1%
passed #53880
debpkg-stable

03:44:09

passed #53878
mingw-shared

00:11:18

passed #53879
mingw-static

00:08:47

passed #53949
rpm-pkg

00:58:06

failed #53872
debian-stable-gcc

01:41:52

failed #53873
debian-unstable-gcc-coverage

01:41:52

failed #53881
rpm-pkg

01:10:47

 
  Publish
passed #53882
dput
publish-rpm

00:00:19

passed #53883
dput
publish-stable

00:01:55