[PATCH] Rename confusing variable in show-diff

[Junio C Hamano <junkio@cox.net>]

The show-diff command uses a variable "new" but it is always
used to point at the original data recorded in the dircache
before the user started editing in the working file.  Rename it
to "old" to avoid confusion.

To be applied on top of my previous patches:

    [PATCH] Optionally tell show-diff to show only named files.
    [PATCH] show-diff -z option for machine readable output.
    [PATCH] show-diff shell safety.

Signed-off-by: Junio C Hamano <junkio@cox.net>
---

 show-diff.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

show-diff.c: e52eee21c2f682bef2dba06445699cca8e34c63a
--- show-diff.c
+++ show-diff.c	2005-04-16 18:05:55.000000000 -0700
@@ -162,7 +162,7 @@
 		int changed;
 		unsigned long size;
 		char type[20];
-		void *new;
+		void *old;
 
 		if (1 <argc &&
 		    ! matches_pathspec(ce, argv+1, argc-1))
@@ -193,8 +193,8 @@
 		if (silent)
 			continue;
 
-		new = read_sha1_file(ce->sha1, type, &size);
-		show_differences(ce->name, new, size);
+		old = read_sha1_file(ce->sha1, type, &size);
+		show_differences(ce->name, old, size);
 		free(new);
 	}
 	return 0;