[gjs] (3 commits) Non-fast-forward update to branch wip/jtojnar/nixos-fixes

[Jan Tojnar <jtojnar src gnome org>]

The branch 'wip/jtojnar/nixos-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:

  a6cd5bf... build: Make installed tests vars absolute
  dc067c1... build: Use installed_tests_execdir in the .test files
  8fdfdc1... build: Install test libraries under installed_tests_execdir

Commits added to the branch:

  5cfd2c2... build: Make installed tests vars absolute
  1a81f40... build: Use installed_tests_execdir in the .test files
  361a319... build: Install test libraries under installed_tests_execdir