Move contents of README.build to README.source, except the redundant steps

svn path=/dists/trunk/linux-2.6/; revision=14774

debian/README.build

@@ -1,17 +0,0 @@
-Building kernels from SVN (for official images):
-
-1) Start by downloading a kernel tarball from kernel.org
-   (ie, linux-2.6.25.tar.bz2) and, optionally, a patch
-   (i.e. patch-2.6.26-rc3.bz2).
-
-2) Run ./debian/bin/genorig.py <tarball> [patch]. This will produce
-   ../orig/linux-2.6_<version>.orig.tar.gz
-   (i.e. linux-2.6_2.6.26~rc3.orig.tar.gz).
-
-3) Unpack linux-2.6-<version>.orig.tar.gz, cd into the new directory,
-   and do a 'svn export' to get the debian/ subdirectory.
-   Alternatively unpack using "make -f debian/rules orig".
-
-4) Build debian/control by running 'make -f debian/rules debian/control-real'.
-
-5) .configs will be generated during build.

debian/README.source

@@ -1,3 +1,17 @@
+Updating the upstream source
+============================
+
+1) Start by downloading a kernel tarball from kernel.org
+   (ie, linux-2.6.25.tar.bz2) and, optionally, a patch
+   (i.e. patch-2.6.26-rc3.bz2).
+
+2) Run ./debian/bin/genorig.py <tarball> [patch]. This will produce
+   ../orig/linux-2.6_<version>.orig.tar.gz
+   (i.e. linux-2.6_2.6.26~rc3.orig.tar.gz).
+
+3) Unpack linux-2.6-<version>.orig.tar.gz, cd into the new directory,
+   and do a 'svn export' to get the debian/ subdirectory.
+   Alternatively unpack using "make -f debian/rules orig".
 
 Applying patches to the Debian kernel tree
 ==========================================
@@ -75,7 +89,7 @@ Normally, the arch-specific contents should be controlled by
 adjusting the corresponding defines file.
 
 TODO:
-- Generating DFSG tarballs
+- Patches applied to the upstream source
 - How to define a flavour
 - More detail on generation of debian/control and configs