[PATCH] Add -O<orderfile> option to diff-* brothers.

A new diffcore filter diffcore-order is introduced.  This takes
a text file each of whose line is a shell glob pattern.  Patches
that match a glob pattern on an earlier line in the file are
output before patches that match a later line, and patches that
do not match any glob pattern are output last.

A typical orderfile for git project probably should look like
this:

    README
    Makefile
    Documentation
    *.h
    *.c

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 5 insertions, 2 deletions

diff --git a/diff.h b/diff.h
index ef0dfe287..0f1ed5877 100644
--- a/diff.h
+++ b/diff.h
@@ -43,12 +43,15 @@ extern void diffcore_pickaxe(const char *needle, int opts);
 
 extern void diffcore_pathspec(const char **pathspec);
 
-extern void diffcore_break(int);
+extern void diffcore_order(const char *orderfile);
+
+extern void diffcore_break(int max_score);
 
 extern void diffcore_std(const char **paths,
 			 int detect_rename, int rename_score,
 			 const char *pickaxe, int pickaxe_opts,
-			 int break_opt);
+			 int break_opt,
+			 const char *orderfile);
 
 extern int diff_queue_is_empty(void);