[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/ipv6/Kconfig

@@ -1,6 +1,26 @@
 #
 # IPv6 configuration
-# 
+#
+
+#   IPv6 as module will cause a CRASH if you try to unload it
+config IPV6
+	tristate "The IPv6 protocol"
+	default m
+	select CRYPTO if IPV6_PRIVACY
+	select CRYPTO_MD5 if IPV6_PRIVACY
+	---help---
+	  This is complemental support for the IP version 6.
+	  You will still be able to do traditional IPv4 networking as well.
+
+	  For general information about IPv6, see
+	  <http://playground.sun.com/pub/ipng/html/ipng-main.html>.
+	  For Linux IPv6 development information, see <http://www.linux-ipv6.org>.
+	  For specific information about IPv6 under Linux, read the HOWTO at
+	  <http://www.bieringer.de/linux/IPv6/>.
+
+	  To compile this protocol support as a module, choose M here: the 
+	  module will be called ipv6.
+
 config IPV6_PRIVACY
 	bool "IPv6: Privacy Extensions (RFC 3041) support"
 	depends on IPV6