Add missing packaging file (according to Debian Policy Manual).

svn path=/trunk/; revision=29007

Makefile.am

@@ -539,6 +539,7 @@ EXTRA_DIST = \
 	debian/pycompat		\
 	debian/pyversions	\
 	debian/rules		\
+	debian/README.source	\
 	debian/tshark.files	\
 	debian/tshark.manpages	\
 	debian/watch		\

debian/README.source

@@ -0,0 +1,34 @@
+This package uses dpatch in order to apply patches to the upstream 
+source.
+Patches are stored in debian/patches and their filenames usually end in 
+.dpatch .
+For further details, see the man pages for dpatch and dpatch-edit-patch.
+
+All commands described below should be run from the top directory of the 
+package source tree, unless otherwise stated.
+
+ * To generate the fully patched source, in a form ready for
+   editing, that would be built to create Debian packages, run: 
+
+     dpatch apply-all
+
+   Note: This should happen automatically when you run 
+   dpkg-source -x on a dpatch source package.
+
+ * To modify the source and save those modifications so that
+   they will be applied when building the package, pick a
+   suitably informative patch file name, for example
+   01_add_README.source_file.dpatch, and then run:
+
+     dpatch-edit-patch 01_add_README.source_file.dpatch
+
+   This will place you in a new shell in a temporary copy of the 
+   source tree.  Make your desired modifications to it, and then 
+   exit the shell to create the patch file containing them (this 
+   file will appear in debian/patches).
+
+ * To remove source modifications that are currently being
+   applied when building the package, run:
+
+     dpatch unapply-all
+