Port folder renaming changes from AOM

Manually cherry-picked commits:
ceef058 libvpx->libaom part2
3d26d91 libvpx -> libaom
cfea7dd vp10/ -> av1/
3a8eff7 Fix a build issue for a test
bf4202e Rename vpx to aom

Change-Id: I1b0eb5a40796e3aaf41c58984b4229a439a597dc
diff --git a/av1/common/vp10_rtcd.c b/av1/common/vp10_rtcd.c
new file mode 100644
index 0000000..7fce6b9
--- /dev/null
+++ b/av1/common/vp10_rtcd.c
@@ -0,0 +1,19 @@
+/*
+ *  Copyright (c) 2011 The WebM project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+#include "./vpx_config.h"
+#define RTCD_C
+#include "./vp10_rtcd.h"
+#include "aom_ports/vpx_once.h"
+
+void vp10_rtcd() {
+  // TODO(JBB): Remove this once, by insuring that both the encoder and
+  // decoder setup functions are protected by once();
+  once(setup_rtcd_internal);
+}