When G_CLEANUP_SCOPE is defined the G_DEFINE_TYPE and macros
properly push newly registered GTypes onto the cleanup list.
In addition push all the the basic types into the libgobject
cleanup list.
https://bugzilla.gnome.org/show_bug.cgi?id=711778
Just like g_object_notify, check for a zero ref_count in
g_object_notify_by_pspec and leave if it is 0.
This allows using functions in ->finalize() that possibly also
notify a property change on the object. Previously,
this resulted in an error from g_object_ref.
https://bugzilla.gnome.org/show_bug.cgi?id=705570
Very many testcases, some GLib tools (resource compiler, etc) and
GApplication were calling g_type_init().
Remove those uses, as they are no longer required.
https://bugzilla.gnome.org/show_bug.cgi?id=686161
Since we added g_object_notify_by_pspec(), an efficient way to install
and notify properties relies on storing the GParamSpec pointers inside
a static arrays, like we do for signal identifiers.
Instead of multiple calls to g_object_class_install_property(), we
should have a single function to take the static array of GParamSpecs
and iterate it.
https://bugzilla.gnome.org/show_bug.cgi?id=626919
Signed-off-by: Emmanuele Bassi <ebassi@linux.intel.com>