War on whitespace

This uses "git-apply --whitespace=strip" to fix whitespace errors that have
crept in to our source files over time.  There are a few files that need
to have trailing whitespaces (most notably, test vectors).  The results
still passes the test, and build result in Documentation/ area is unchanged.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin-ls-files.c

@@ -117,7 +117,7 @@ static void show_other_files(struct dir_struct *dir)
 		if (0 <= pos)
 			continue;	/* exact match */
 		pos = -pos - 1;
-		if (pos < active_nr) { 
+		if (pos < active_nr) {
 			ce = active_cache[pos];
 			if (ce_namelen(ce) == len &&
 			    !memcmp(ce->name, ent->name, len))