- First replacement of xyssl by polarssl where needed

diff --git a/programs/hash/sha2sum.c b/programs/hash/sha2sum.c
index c0d42a8..beb21cb 100644
--- a/programs/hash/sha2sum.c
+++ b/programs/hash/sha2sum.c
@@ -25,7 +25,7 @@
 #include <string.h>
 #include <stdio.h>
 
-#include "xyssl/sha2.h"
+#include "polarssl/sha2.h"
 
 static int sha2_wrapper( char *filename, unsigned char *sum )
 {