[glib] (6 commits) Non-fast-forward update to branch fix-freeze-count-underflow

[Philip Withnall <pwithnall src gnome org>]

The branch 'fix-freeze-count-underflow' 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:

  ccfabc0... Convert tests/gobject/testgobject.c to glib test framework
  ee67ca4... Move tests/gobject/testgobject.c to gobject/tests/basics-go
  5d498f4... Merge branch 'move_testgobject' into 'main'
  94c557a... Add a testcase
  5b1bf24... gobject: Don't thaw excessively

Commits added to the branch:

  ae8c667... Convert tests/gobject/testgobject.c to glib test framework
  f6dc45a... Move tests/gobject/testgobject.c to gobject/tests/basics-go
  dc4c727... tests: Port GObject singleton test to GTest framework
  2b93488... tests: Simplify singleton test code using G_DECLARE_FINAL_T
  f0df684... tests: Add a singleton construct-property test
  8675f89... gobject: Don't thaw excessively