[libglnx] (14 commits) Non-fast-forward update to branch wip/reuse

[Simon McVittie <smcv src gnome org>]

The branch 'wip/reuse' 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:

  c49d757... Declare copyright and licensing using REUSE
  f30fdcf... CI: Run `reuse lint` across the tree
  b08d0be... Update copyright holder for Endless' contributions

Commits added to the branch:

  1f02e43... glnx-lockfile.h: Remove unused inclusion of config.h (*)
  c306703... Include libglnx-config.h instead of config.h (*)
  a4dcfe8... build: Use Meson built-in option c_std instead of -std=gnu9 (*)
  82e5b7d... xattrs: Fix possible double-free in `get_xattrs_impl` (*)
  ef502aa... Merge branch 'pr/cov-fix' into 'master' (*)
  24231a9... Fall back if copy_file_range fails with EINVAL (*)
  586bdfe... fdio: Use a read/write loop until EOF if st_size is zero (*)
  803adaf... Merge branch 'disable_copy_file_range_on_EINVAL--I3' into ' (*)
  9fe002a... Merge branch 'wip/stdc99' into 'master' (*)
  15d4c3a... Merge branch 'not-config-h' into 'master' (*)
  a29f340... Merge branch 'wip/smcv/copy-pseudo-files' into 'master' (*)
  81c6adb... Declare copyright and licensing using REUSE
  bc5d289... CI: Run `reuse lint` across the tree
  68191d8... Update copyright holder for Endless' contributions

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