Port renaming changes from AOMedia

Cherry-Picked the following commits:
0defd8f Changed "WebM" to "AOMedia" & "webm" to "aomedia"
54e6676 Replace "VPx" by "AVx"
5082a36 Change "Vpx" to "Avx"
7df44f1 Replace "Vp9" w/ "Av1"
967f722 Remove kVp9CodecId
828f30c Change "Vp8" to "AOM"
030b5ff AUTHORS regenerated
2524cae Add ref-mv experimental flag
016762b Change copyright notice to AOMedia form
81e5526 Replace vp9 w/ av1
9b94565 Add missing files
fa8ca9f Change "vp9" to "av1"
ec838b7  Convert "vp8" to "aom"
80edfa0 Change "VP9" to "AV1"
d1a11fb Change "vp8" to "aom"
7b58251 Point to WebM test data
dd1a5c8 Replace "VP8" with "AOM"
ff00fc0 Change "VPX" to "AOM"
01dee0b Change "vp10" to "av1" in source code
cebe6f0 Convert "vpx" to "aom"
17b0567 rename vp10*.mk to av1_*.mk
fe5f8a8 rename files vp10_* to av1_*

Change-Id: I6fc3d18eb11fc171e46140c836ad5339cf6c9419
diff --git a/aom_dsp/mips/convolve8_dspr2.c b/aom_dsp/mips/convolve8_dspr2.c
index 09a9083..db2e6ef 100644
--- a/aom_dsp/mips/convolve8_dspr2.c
+++ b/aom_dsp/mips/convolve8_dspr2.c
@@ -11,10 +11,10 @@
 #include <assert.h>
 #include <stdio.h>
 
-#include "./vpx_dsp_rtcd.h"
+#include "./aom_dsp_rtcd.h"
 #include "aom_dsp/mips/convolve_common_dspr2.h"
-#include "aom_dsp/vpx_dsp_common.h"
-#include "aom_dsp/vpx_filter.h"
+#include "aom_dsp/aom_dsp_common.h"
+#include "aom_dsp/aom_filter.h"
 #include "aom_ports/mem.h"
 
 #if HAVE_DSPR2
@@ -24,7 +24,7 @@
                                               const int16_t *filter_x0,
                                               int32_t h) {
   int32_t y;
-  uint8_t *cm = vpx_ff_cropTbl;
+  uint8_t *cm = aom_ff_cropTbl;
   uint8_t *dst_ptr;
   int32_t vector1b, vector2b, vector3b, vector4b;
   int32_t Temp1, Temp2, Temp3, Temp4;
@@ -138,7 +138,7 @@
                                               const int16_t *filter_x0,
                                               int32_t h) {
   int32_t y;
-  uint8_t *cm = vpx_ff_cropTbl;
+  uint8_t *cm = aom_ff_cropTbl;
   uint8_t *dst_ptr;
   uint32_t vector4a = 64;
   int32_t vector1b, vector2b, vector3b, vector4b;
@@ -311,7 +311,7 @@
   int32_t c, y;
   const uint8_t *src;
   uint8_t *dst;
-  uint8_t *cm = vpx_ff_cropTbl;
+  uint8_t *cm = aom_ff_cropTbl;
   uint32_t vector_64 = 64;
   int32_t filter12, filter34, filter56, filter78;
   int32_t Temp1, Temp2, Temp3;
@@ -789,7 +789,7 @@
   int32_t c, y;
   const uint8_t *src;
   uint8_t *dst;
-  uint8_t *cm = vpx_ff_cropTbl;
+  uint8_t *cm = aom_ff_cropTbl;
   uint32_t vector_64 = 64;
   int32_t filter12, filter34, filter56, filter78;
   int32_t Temp1, Temp2, Temp3;
@@ -1295,7 +1295,7 @@
   }
 }
 
-void vpx_convolve8_dspr2(const uint8_t *src, ptrdiff_t src_stride, uint8_t *dst,
+void aom_convolve8_dspr2(const uint8_t *src, ptrdiff_t src_stride, uint8_t *dst,
                          ptrdiff_t dst_stride, const int16_t *filter_x,
                          int x_step_q4, const int16_t *filter_y, int y_step_q4,
                          int w, int h) {
@@ -1320,7 +1320,7 @@
     copy_horiz_transposed(src - src_stride * 3, src_stride, temp,
                           intermediate_height, w, intermediate_height);
   } else if (((const int32_t *)filter_x)[0] == 0) {
-    vpx_convolve2_dspr2(src - src_stride * 3, src_stride, temp,
+    aom_convolve2_dspr2(src - src_stride * 3, src_stride, temp,
                         intermediate_height, filter_x, w, intermediate_height);
   } else {
     src -= (src_stride * 3 + 3);
@@ -1363,7 +1363,7 @@
   if (filter_y[3] == 0x80) {
     copy_horiz_transposed(temp + 3, intermediate_height, dst, dst_stride, h, w);
   } else if (((const int32_t *)filter_y)[0] == 0) {
-    vpx_convolve2_dspr2(temp + 3, intermediate_height, dst, dst_stride,
+    aom_convolve2_dspr2(temp + 3, intermediate_height, dst, dst_stride,
                         filter_y, h, w);
   } else {
     switch (h) {
@@ -1392,7 +1392,7 @@
   }
 }
 
-void vpx_convolve_copy_dspr2(const uint8_t *src, ptrdiff_t src_stride,
+void aom_convolve_copy_dspr2(const uint8_t *src, ptrdiff_t src_stride,
                              uint8_t *dst, ptrdiff_t dst_stride,
                              const int16_t *filter_x, int filter_x_stride,
                              const int16_t *filter_y, int filter_y_stride,