logGetDebugEnabled

Return whether debug output from the GLib logging system is enabled.

Note that this should not be used to conditionalise calls to func@GLib.debug or other logging functions; it should only be used from type@GLib.LogWriterFunc implementations.

Note also that the value of this does not depend on G_MESSAGES_DEBUG, nor func@GLib.log_writer_default_set_debug_domains; see the docs for func@GLib.log_set_debug_enabled.