update JFS entry in MAINTAINERS

JFS hasn't really been supported for a while.  It's still maintained,
but saying it's supported is a stretch.  Updating my preferred email
address as well.
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

MAINTAINERS

@@ -3287,11 +3287,11 @@ F:	include/linux/ivtv*
 
 JFS FILESYSTEM
 P:	Dave Kleikamp
-M:	shaggy@austin.ibm.com
+M:	shaggy@linux.vnet.ibm.com
 L:	jfs-discussion@lists.sourceforge.net
 W:	http://jfs.sourceforge.net/
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6.git
-S:	Supported
+S:	Maintained
 F:	Documentation/filesystems/jfs.txt
 F:	fs/jfs/