libs/wpp: Specify the bison name prefix directly in the source file.

libs/wpp/Makefile.in

@@ -21,7 +21,7 @@ $(MODULE): $(OBJS)
 	$(RANLIB) $@
 
 ppy.tab.c ppy.tab.h: ppy.y
-	$(BISON) -ppp -d -t $(SRCDIR)/ppy.y -o ppy.tab.c
+	$(BISON) -d $(SRCDIR)/ppy.y -o ppy.tab.c
 
 # hack to allow parallel make
 ppy.tab.h: ppy.tab.c

libs/wpp/ppy.y

@@ -123,6 +123,8 @@ static int	nmacro_args;
 
 %}
 
+%name-prefix="pp"
+
 %union{
 	int		sint;
 	unsigned int	uint;