+2009-04-13 Borut Razem <borut.razem AT siol.net>
+
+ * device/lib/Makefile.in, device/lib/ds390/Makefile.in,
+ device/lib/ds400/Makefile.in, device/lib/gbz80/Makefile.in,
+ device/lib/hc08/Makefile.in, device/lib/mcs51/Makefile.in,
+ device/lib/z80/Makefile.in: override PORTDIR in sub-makefiles
+