Small documentation patch for diffutils 2.8.1

[Petter Reinholdtsen]

Here is a patch to make sure the diff info file is placed in the same
emacs info category as gawk, make and tar.

diff -ur src-2.8.1/doc/diff.texi src-2.8.1-local/doc/diff.texi
--- src-2.8.1/doc/diff.texi     2002-04-05 22:37:31.000000000 +0200
+++ src-2.8.1-local/doc/diff.texi       2002-09-19 15:49:30.000000000 +0200
@@ -44,7 +44,7 @@
 * sdiff: (diff)Invoking sdiff.                  Merge 2 files side-by-side.
 @end direntry

address@hidden GNU packages
address@hidden GNU Packages
 @direntry
 * Diff: (diff).                 Comparing and merging files.
 @end direntry