Changed the order of toolset and gyp CFLAGS, CXXFLAGS and LDFLAGS.

test/cflags/cflags.c

Index: test/cflags/cflags.c
===================================================================
--- test/cflags/cflags.c	(revision 0)
+++ test/cflags/cflags.c	(revision 0)
@@ -0,0 +1,15 @@
+/* Copyright (c) 2010 Google Inc. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file. */
+
+#include <stdio.h>
+
+int main(int argc, char *argv[])
+{
+#ifdef __OPTIMIZE__
+  printf("Using an optimization flag\n");
+#else
+  printf("Using no optimization flag\n");
+#endif
+  return 0;
+}