Cleanup of the test code that looks for the WolfSSL root directory. Now it tries to open the certs/ntru-cert.pem file in each directory up (limited to 5) until it opens it.

examples/echoserver/echoserver.c

@@ -393,10 +393,7 @@ THREAD_RETURN CYASSL_THREAD echoserver_test(void* args)
 #if defined(DEBUG_CYASSL) && !defined(CYASSL_MDK_SHELL)
         CyaSSL_Debugging_ON();
 #endif
-        if (CurrentDir("echoserver"))
-            ChangeDirBack(2);
-        else if (CurrentDir("Debug") || CurrentDir("Release"))
-            ChangeDirBack(3);
+        ChangeToWolfRoot();
         echoserver_test(&args);
         CyaSSL_Cleanup();