before enabling thread support on native AiX.
* configure: Regenerate.
* config/powerpc/aix432.mh (NATDEPFILES): Remove aix-thread.o
from the list of object files as it is now appended by configure
if thread support is enabled.
(NAT_CLIBS): Removed as -lpthdebug is also appended by configure
if thread support is enabled.