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

av1/encoder/hybrid_fwd_txfm.h

@@ -0,0 +1,45 @@
+/*
+ *  Copyright (c) 2015 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.
+ */
+
+#ifndef VP10_ENCODER_HYBRID_FWD_TXFM_H_
+#define VP10_ENCODER_HYBRID_FWD_TXFM_H_
+
+#include "./vpx_config.h"
+
+typedef enum FWD_TXFM_OPT { FWD_TXFM_OPT_NORMAL, FWD_TXFM_OPT_DC } FWD_TXFM_OPT;
+
+typedef struct FWD_TXFM_PARAM {
+  TX_TYPE tx_type;
+  TX_SIZE tx_size;
+  FWD_TXFM_OPT fwd_txfm_opt;
+  int rd_transform;
+  int lossless;
+#if CONFIG_VP9_HIGHBITDEPTH
+  int bd;
+#endif  // CONFIG_VP9_HIGHBITDEPTH
+} FWD_TXFM_PARAM;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void fwd_txfm(const int16_t *src_diff, tran_low_t *coeff, int diff_stride,
+              FWD_TXFM_PARAM *fwd_txfm_param);
+
+#if CONFIG_VP9_HIGHBITDEPTH
+void highbd_fwd_txfm(const int16_t *src_diff, tran_low_t *coeff,
+                     int diff_stride, FWD_TXFM_PARAM *fwd_txfm_param);
+#endif  // CONFIG_VP9_HIGHBITDEPTH
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // VP10_ENCODER_HYBRID_FWD_TXFM_H_