fix example makefile debug option examples (commented out)

examples/Makefile.cmdline

@@ -26,6 +26,7 @@ CCLIBS += -lncurses
 # Optional feature defines, see: http://www.duktape.org/guide.html#compiling
 CCOPTS += -DDUK_OPT_SELF_TESTS
 #CCOPTS += -DDUK_OPT_DEBUG
+#CCOPTS += -DDUK_OPT_DPRINT
 # ...
 
 duk:	$(DUKTAPE_SOURCES) $(DUKTAPE_CMDLINE_SOURCES)

examples/Makefile.example

@@ -25,6 +25,7 @@ DEFINES =
 # Optional feature defines, see: http://www.duktape.org/guide.html#compiling
 DEFINES += -DDUK_OPT_SELF_TESTS
 #DEFINES += -DDUK_OPT_DEBUG
+#DEFINES += -DDUK_OPT_DPRINT
 #DEFINES += -DDUK_OPT_NO_TRACEBACKS
 # ...