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misc fixes: Remove a wasted value.

Remove delta index 254 from probability remapping and subexp coding.
Saves 1-bit when the delta index is 129.

Change-Id: I88aba565fc766b1769165be458d2efd3ce45817e

--- a/vp10/decoder/dsubexp.c

+++ b/vp10/decoder/dsubexp.c

@@ -23,13 +23,13 @@

 static int decode_uniform(vpx_reader *r) {

   const int l = 8;

-  const int m = (1 << l) - 191;

+  const int m = (1 << l) - 191 + CONFIG_MISC_FIXES;

   const int v = vpx_read_literal(r, l - 1);

   return v < m ?  v : (v << 1) - m + vpx_read_bit(r);

 }

 static int inv_remap_prob(int v, int m) {

-  static uint8_t inv_map_table[MAX_PROB] = {

+  static uint8_t inv_map_table[MAX_PROB - CONFIG_MISC_FIXES] = {

       7,  20,  33,  46,  59,  72,  85,  98, 111, 124, 137, 150, 163, 176, 189,

     202, 215, 228, 241, 254,   1,   2,   3,   4,   5,   6,   8,   9,  10,  11,

      12,  13,  14,  15,  16,  17,  18,  19,  21,  22,  23,  24,  25,  26,  27,

@@ -46,7 +46,10 @@

     191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 203, 204, 205, 206,

     207, 208, 209, 210, 211, 212, 213, 214, 216, 217, 218, 219, 220, 221, 222,

     223, 224, 225, 226, 227, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238,

-    239, 240, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 253

+    239, 240, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253,

+#if !CONFIG_MISC_FIXES

+    253

+#endif

   };

   assert(v < (int)(sizeof(inv_map_table) / sizeof(inv_map_table[0])));

   v = inv_map_table[v];

--- a/vp10/encoder/subexp.c

+++ b/vp10/encoder/subexp.c

@@ -25,7 +25,8 @@

   10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,

   10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,

   10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,

-  10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,

+  10, 11 - CONFIG_MISC_FIXES,

+          11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,

   11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,

   11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,

   11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,

@@ -85,7 +86,7 @@

 static void encode_uniform(vpx_writer *w, int v) {

   const int l = 8;

-  const int m = (1 << l) - 191;

+  const int m = (1 << l) - 191 + CONFIG_MISC_FIXES;

   if (v < m) {

     vpx_write_literal(w, v, l - 1);

   } else {