[NET]: move config options out to individual protocols

Move the protocol specific config options out to the specific protocols.
With this change net/Kconfig now starts to become readable and serve as a
good basis for further re-structuring.

The menu structure is left almost intact, except that indention is
fixed in most cases. Most visible are the INET changes where several
"depends on INET" are replaced with a single ifdef INET / endif pair.

Several new files were created to accomplish this change - they are
small but serve the purpose that config options are now distributed
out where they belongs.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipx/Kconfig

@@ -1,6 +1,39 @@
 #
 # IPX configuration
 #
+config IPX
+	tristate "The IPX protocol"
+	select LLC
+	---help---
+	  This is support for the Novell networking protocol, IPX, commonly
+	  used for local networks of Windows machines.  You need it if you
+	  want to access Novell NetWare file or print servers using the Linux
+	  Novell client ncpfs (available from
+	  <ftp://platan.vc.cvut.cz/pub/linux/ncpfs/>) or from
+	  within the Linux DOS emulator DOSEMU (read the DOSEMU-HOWTO,
+	  available from <http://www.tldp.org/docs.html#howto>).  In order
+	  to do the former, you'll also have to say Y to "NCP file system
+	  support", below.
+
+	  IPX is similar in scope to IP, while SPX, which runs on top of IPX,
+	  is similar to TCP. There is also experimental support for SPX in
+	  Linux (see "SPX networking", below).
+
+	  To turn your Linux box into a fully featured NetWare file server and
+	  IPX router, say Y here and fetch either lwared from
+	  <ftp://ibiblio.org/pub/Linux/system/network/daemons/> or
+	  mars_nwe from <ftp://www.compu-art.de/mars_nwe/>. For more
+	  information, read the IPX-HOWTO available from
+	  <http://www.tldp.org/docs.html#howto>.
+
+	  General information about how to connect Linux, Windows machines and
+	  Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>.
+
+	  The IPX driver would enlarge your kernel by about 16 KB. To compile
+	  this driver as a module, choose M here: the module will be called ipx.
+	  Unless you want to integrate your Linux box with a local Novell
+	  network, say N.
+
 config IPX_INTERN
 	bool "IPX: Full internal IPX network"
 	depends on IPX