- First replacement of xyssl by polarssl where needed

diff --git a/library/sha2.c b/library/sha2.c
index 03e5b70..8181229 100644
--- a/library/sha2.c
+++ b/library/sha2.c
@@ -23,11 +23,11 @@
  *  http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf
  */
 
-#include "xyssl/config.h"
+#include "polarssl/config.h"
 
-#if defined(XYSSL_SHA2_C)
+#if defined(POLARSSL_SHA2_C)
 
-#include "xyssl/sha2.h"
+#include "polarssl/sha2.h"
 
 #include <string.h>
 #include <stdio.h>
@@ -430,7 +430,7 @@
     memset( &ctx, 0, sizeof( sha2_context ) );
 }
 
-#if defined(XYSSL_SELF_TEST)
+#if defined(POLARSSL_SELF_TEST)
 /*
  * FIPS-180-2 test vectors
  */