* contrib/hbapollo/Makefile
* contrib/hbcurl/Makefile
* contrib/hbfbird/Makefile
* contrib/hbfimage/Makefile
* contrib/hbgd/Makefile
* contrib/hbhpdf/Makefile
* contrib/hbmysql/Makefile
* contrib/hbpgsql/Makefile
* contrib/rddads/Makefile
* Changed to use default for all architecture.
Let's hope that checking existence for mixed platform
paths won't create problems on any platforms.
+ Added include path detection logic to hbapollo, too.
+ Added Darwin path to hbgd include path list.
+ Added std Linux path to hbfbird include path list.
; TOFIX: Seems that 'ifneq ($(HB_INC_*_OK),)' doesn't
really work if no path in the path list is valid.