Debug: remove extra GD_ABORT in disabled mode.
Debug: remove extra GD_ABORT in disabled mode.

Fix 909c5ad8b35023bfb7f16ca28c54cd9eed46bef9 which claims to do it
in its message.

	* include/libport/debug.hh: Remove GD_ABORT in disable mode,
	use the global one.

aldebaran/libport,aldebaran/libport,aldebaran/libport,aldebaran/libport,aldebaran/libport