"_signals" and "signals_invalidated" were moved out of the
"TOOLS_ENABLED" directive. Updated also the two "update_signals" and
"_update_signals" methods so it makes sense.
Using `misc/scripts/fix_headers.py` on all Godot files.
Some missing header guards were added, and the header inclusion order
was fixed in the Bullet module.
- alloc_language_binding: Use strong GC handle as well for references. Fixes#15138
- Set the native instance field of Godot.Object to IntPtr.Zero when it's freed.
- Create weak handles without tracking resurrection (that was causing trouble). This means we have to call notification predelete before queueing a native Object for deletion, and use the MonoObject* passed by the finalizer because the weak GC handle target will return NULL at this point.
- Make ScriptCreateDialog disable the built-in script checked button if the language does not support it.
- ScriptLanguage's get_template and make_template now receive the script path as class name if the the script language does not have named classes.
Fabio Alessandrelli
Max Hilbrunner
Andreas Haas
Michele Valente
Paul Joannon
Ignacio Etcheverry
Rémi Verschelde
Jerome67000