[libadwaita] (11 commits) Non-fast-forward update to branch wip/exalm/abi-checker

[Alexander Mikhaylenko <alexm src gnome org>]

The branch 'wip/exalm/abi-checker' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  a9ba2b0... ci: Add ABI checker
  00709a8... ci: Work-around libabigail bug
  e41cca4... ci: Work-around another libabigail problem
  40a7d00... ci: Move API visibility script to .gitlab-ci/
  fdac2f7... ci: Use a container image for abi checker

Commits added to the branch:

  3f0df1a... meson: Avoid a trailing slash on libdir and datadir (*)
  9e4ac48... preferences-page: Support mnemonics (*)
  72091ef... view-switcher-button: Support use-underline (*)
  e086fa0... preferences-window: Strip underlines from search view rows (*)
  77243b8... demo: Add mnemonics to preference pages (*)
  5dfc25b... readme: Update links (*)
  6b934b0... ci: Add ABI checker
  3d45621... ci: Work-around libabigail bug
  dc1e931... ci: Work-around another libabigail problem
  b65a3c1... ci: Move API visibility script to .gitlab-ci/
  6087f07... ci: Use a container image for abi checker

(*) This commit already existed in another branch; no separate mail sent