Keep together options controlling the behaviour of diffcore-rename.

It makes little sense to have --diff-filter in the middle of them, and
even spares an ifndef::git-format-patch.

Signed-off-by: Yann Dirson <ydirson@altern.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/diff-options.txt

@@ -247,20 +247,6 @@ endif::git-log[]
 	Detect copies as well as renames.  See also `--find-copies-harder`.
 	If `n` is specified, it has the same meaning as for `-M<n>`.
 
-ifndef::git-format-patch[]
---diff-filter=[(A|C|D|M|R|T|U|X|B)...[*]]::
-	Select only files that are Added (`A`), Copied (`C`),
-	Deleted (`D`), Modified (`M`), Renamed (`R`), have their
-	type (i.e. regular file, symlink, submodule, ...) changed (`T`),
-	are Unmerged (`U`), are
-	Unknown (`X`), or have had their pairing Broken (`B`).
-	Any combination of the filter characters (including none) can be used.
-	When `*` (All-or-none) is added to the combination, all
-	paths are selected if there is any file that matches
-	other criteria in the comparison; if there is no file
-	that matches other criteria, nothing is selected.
-endif::git-format-patch[]
-
 --find-copies-harder::
 	For performance reasons, by default, `-C` option finds copies only
 	if the original file of the copy was modified in the same
@@ -278,6 +264,18 @@ endif::git-format-patch[]
 	number.
 
 ifndef::git-format-patch[]
+--diff-filter=[(A|C|D|M|R|T|U|X|B)...[*]]::
+	Select only files that are Added (`A`), Copied (`C`),
+	Deleted (`D`), Modified (`M`), Renamed (`R`), have their
+	type (i.e. regular file, symlink, submodule, ...) changed (`T`),
+	are Unmerged (`U`), are
+	Unknown (`X`), or have had their pairing Broken (`B`).
+	Any combination of the filter characters (including none) can be used.
+	When `*` (All-or-none) is added to the combination, all
+	paths are selected if there is any file that matches
+	other criteria in the comparison; if there is no file
+	that matches other criteria, nothing is selected.
+
 -S<string>::
 	Look for differences that introduce or remove an instance of
 	<string>. Note that this is different than the string simply