[PATCH] Add ctag support for function prototypes and external variable declarations

[John Kacur <jkacur@rogers.com>]

This patch adds function prototypes and external variable declarations
to the set of tag kinds when running ctags. I find this useful when
perusing the kernel. Please apply.

Signed-off-by: John Kacur <jkacur@rogers.com>

---
diff -u linux-2.6.14/Makefile{orig,}

--- linux-2.6.14/Makefile.orig	2005-10-28 22:08:31.828865544 -0400
+++ linux-2.6.14/Makefile	2005-10-28 22:18:26.528457464 -0400
@@ -1227,7 +1227,7 @@
 quiet_cmd_TAGS = MAKE   $@
 define cmd_TAGS
 	rm -f $@; \
-	ETAGSF=`etags --version | grep -i exuberant >/dev/null && echo "-I __initdata,__exitdata,EXPORT_SYMBOL,EXPORT_SYMBOL_GPL --extra=+f"`; \
+	ETAGSF=`etags --version | grep -i exuberant >/dev/null && echo "-I __initdata,__exitdata,EXPORT_SYMBOL,EXPORT_SYMBOL_GPL --extra=+f --c-kinds=+px"`; \
 	$(all-sources) | xargs etags $$ETAGSF -a
 endef
 
@@ -1238,7 +1238,7 @@
 quiet_cmd_tags = MAKE   $@
 define cmd_tags
 	rm -f $@; \
-	CTAGSF=`ctags --version | grep -i exuberant >/dev/null && echo "-I __initdata,__exitdata,EXPORT_SYMBOL,EXPORT_SYMBOL_GPL --extra=+f"`; \
+	CTAGSF=`ctags --version | grep -i exuberant >/dev/null && echo "-I __initdata,__exitdata,EXPORT_SYMBOL,EXPORT_SYMBOL_GPL --extra=+f --c-kinds=+px"`; \
 	$(all-sources) | xargs ctags $$CTAGSF -a
 endef