[libadwaita] (8 commits) Non-fast-forward update to branch wip/exalm/fixes

[Adrien Plazas <aplazas src gnome org>]

The branch 'wip/exalm/fixes' 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:

  edd1d99... clamp: Fix measuring child with for_size == -1
  f1cb986... focus: Rename to widget-utils
  f7a577c... Implement compute_expand() for widgets that have children
  0302f92... header-bar: Remove a useless function
  6b7d234... Implement get_request_mode() where appropriate

Commits added to the branch:

  ca848ca... stylesheet: Add .pill style class for buttons (*)
  2307a80... examples: Use pill buttons throughout the demo (*)
  be24333... examples: Use icon-less status pages instead of manual labe (*)
  b87bd3b... clamp: Fix measuring child with for_size == -1
  8c74758... focus: Rename to widget-utils
  66d4d6e... Implement compute_expand() for widgets that have children
  fceb8fd... header-bar: Remove a useless function
  8442d60... Implement get_request_mode() where appropriate

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