Merge changes I3922dea2,I3bab2848,I21f7478a,Ida5de713,Ib9f0eefe, ... into nextgenv2

* changes:
  Fix warnings reported by -Wshadow: Part4: main directory
  Fix warnings reported by -Wshadow: Part3: test/ directory
  Fix warnings reported by -Wshadow: Part2b: more from av1 directory
  Fix warnings reported by -Wshadow: Part2: av1 directory
  Fix warnings reported by -Wshadow: Part1b: scan_order struct and variable
  Fix warnings reported by -Wshadow: Part1: aom_dsp directory
  Move STAT_TYPE enum to source file.
  Code cleanup: mainly rd_pick_partition and methods called from there.

diff --cc av1/common/entropymode.c
Simple merge

diff --cc av1/common/reconintra.c
Simple merge

diff --cc av1/decoder/decodeframe.c
Simple merge

diff --cc av1/decoder/decodemv.c
Simple merge

diff --cc av1/decoder/detokenize.c
Simple merge

diff --cc av1/encoder/bitstream.c
Simple merge

diff --cc av1/encoder/encodeframe.c
Simple merge

diff --cc av1/encoder/encoder.c
Simple merge

diff --cc av1/encoder/encoder.h
Simple merge

diff --cc av1/encoder/rdopt.c
index fef590128c5a4e01a658155bd96dc471e4b07186,8399a850a009cd2d0b583b07a7f64e75b9d9a528..463570a4ae2d7e4665366518b6f749b9f6028c86
--- 1/av1/encoder/rdopt.c
--- 2/av1/encoder/rdopt.c
+++ b/av1/encoder/rdopt.c
@@@ -7799,8 -7810,49 +7810,8 @@@ void av1_rd_pick_intra_mode_sb(const AV
    rd_cost->rdcost = RDCOST(x->rdmult, x->rddiv, rd_cost->rate, rd_cost->dist);
  }
  
 -// This function is designed to apply a bias or adjustment to an rd value based
 -// on the relative variance of the source and reconstruction.
 -#define LOW_VAR_THRESH 16
 -#define VLOW_ADJ_MAX 25
 -#define VHIGH_ADJ_MAX 8
 -static void rd_variance_adjustment(MACROBLOCK *x, int64_t *this_rd,
 -                                   MV_REFERENCE_FRAME ref_frame,
 -                                   unsigned int source_variance) {
 -  unsigned int recon_variance = x->recon_variance;
 -  unsigned int absvar_diff = 0;
 -  int64_t var_error = 0;
 -  int64_t var_factor = 0;
 -
 -  if (*this_rd == INT64_MAX) return;
 -
 -  if ((source_variance + recon_variance) > LOW_VAR_THRESH) {
 -    absvar_diff = (source_variance > recon_variance)
 -                      ? (source_variance - recon_variance)
 -                      : (recon_variance - source_variance);
 -
 -    var_error = ((int64_t)200 * source_variance * recon_variance) /
 -                (((int64_t)source_variance * source_variance) +
 -                 ((int64_t)recon_variance * recon_variance));
 -    var_error = 100 - var_error;
 -  }
 -
 -  // Source variance above a threshold and ref frame is intra.
 -  // This case is targeted mainly at discouraging intra modes that give rise
 -  // to a predictor with a low spatial complexity compared to the source.
 -  if ((source_variance > LOW_VAR_THRESH) && (ref_frame == INTRA_FRAME) &&
 -      (source_variance > recon_variance)) {
 -    var_factor = AOMMIN(absvar_diff, AOMMIN(VLOW_ADJ_MAX, var_error));
 -    // A second possible case of interest is where the source variance
 -    // is very low and we wish to discourage false texture or motion trails.
 -  } else if ((source_variance < (LOW_VAR_THRESH >> 1)) &&
 -             (recon_variance > source_variance)) {
 -    var_factor = AOMMIN(absvar_diff, AOMMIN(VHIGH_ADJ_MAX, var_error));
 -  }
 -  *this_rd += (*this_rd * var_factor) / 100;
 -}
 -
  // Do we have an internal image edge (e.g. formatting bars).
- int av1_internal_image_edge(AV1_COMP *cpi) {
+ int av1_internal_image_edge(const AV1_COMP *cpi) {
    return (cpi->oxcf.pass == 2) &&
           ((cpi->twopass.this_frame_stats.inactive_zone_rows > 0) ||
            (cpi->twopass.this_frame_stats.inactive_zone_cols > 0));

diff --cc configure
Simple merge