[PATCH] Mode only changes from diff.

This fixes another bug.

 - Mode-only changes were pruned incorrectly from the output.
 - Added test to catch the above problem.
 - Normalize rename/copy similarity score in the diff-raw output
   to per-cent, no matter what scale we internally use.

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

diff-helper.c

@@ -4,6 +4,7 @@
 #include "cache.h"
 #include "strbuf.h"
 #include "diff.h"
+#include "diffcore.h" /* just for MAX_SCORE */
 
 static const char *pickaxe = NULL;
 static int line_termination = '\n';
@@ -77,6 +78,7 @@ int main(int ac, const char **av) {
 			if (status == 'R' || status == 'C') {
 				two_paths = 1;
 				sscanf(cp, "%d", &score);
+				score = score * MAX_SCORE / 100;
 				if (line_termination) {
 					cp = strchr(cp,
 						    inter_name_termination);