Rename include directory to mbedtls
diff --git a/library/sha512.c b/library/sha512.c
index 629ed1b..1ef088f 100644
--- a/library/sha512.c
+++ b/library/sha512.c
@@ -26,14 +26,14 @@
  */
 
 #if !defined(POLARSSL_CONFIG_FILE)
-#include "polarssl/config.h"
+#include "mbedtls/config.h"
 #else
 #include POLARSSL_CONFIG_FILE
 #endif
 
 #if defined(POLARSSL_SHA512_C)
 
-#include "polarssl/sha512.h"
+#include "mbedtls/sha512.h"
 
 #if defined(_MSC_VER) || defined(__WATCOMC__)
   #define UL64(x) x##ui64
@@ -49,7 +49,7 @@
 
 #if defined(POLARSSL_SELF_TEST)
 #if defined(POLARSSL_PLATFORM_C)
-#include "polarssl/platform.h"
+#include "mbedtls/platform.h"
 #else
 #include <stdio.h>
 #define polarssl_printf printf