Run $(TOOL_CTAGS) instead of ctags: sometimes it's better than the host's

native ctags, and it's nice to have consistent ctags from one host to another.

sys/arch/i386/Makefile

@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile,v 1.42 2011/09/02 22:12:48 dyoung Exp $
+#	$NetBSD: Makefile,v 1.43 2012/10/23 16:08:12 dyoung Exp $
 
 # Makefile for i386 tags file and boot blocks
 
@@ -34,10 +34,10 @@ DI386=	i386 eisa isa include pci
 
 tags:
 	-rm -f ${TI386}
-	-echo ${SI386} | xargs ctags -wadtf ${TI386}
+	-echo ${SI386} | xargs $(TOOL_CTAGS) -wadtf ${TI386}
 	-find -H ${SYSDIR}/external/bsd/acpica/dist/ -name '*.[ch]' | \
-	    sort -t / -u | xargs ctags -wadtf ${TI386}
-	-${FINDCOMM} | xargs ctags -wadtf ${TI386}
+	    sort -t / -u | xargs $(TOOL_CTAGS) -wadtf ${TI386}
+	-${FINDCOMM} | xargs $(TOOL_CTAGS) -wadtf ${TI386}
 	egrep "^ENTRY(.*)|^ALTENTRY(.*)" ${AI386} | \
 	    ${TOOL_SED} -e \
 	"s;\([^:]*\):\([^(]*\)(\([^, )]*\)\(.*\);\3	\1	/^\2(\3\4$$/;" \