[x265] [PATCH 0 of 6 ] 10bpp avx2 asm code for intra_pred_ang16x16 for all modes 2 to 34

[dnyaneshwar at multicorewareinc.com]

Performance improvement over SSE:
intra_ang_16x16[ 2]     356c-> 192c,  46%
intra_ang_16x16[ 3]     1830c->1080c, 40%
intra_ang_16x16[ 4]     1927c->1219c, 36%
intra_ang_16x16[ 5]     1918c->1139c, 40%
intra_ang_16x16[ 6]     1938c->1142c, 41%
intra_ang_16x16[ 7]     1851c->1206c, 35%
intra_ang_16x16[ 8]     1870c->1187c, 36%
intra_ang_16x16[ 9]     1870c->1081c, 42%
intra_ang_16x16[10]     384c-> 258c,  32%
intra_ang_16x16[11]     1999c->1434c, 28%
intra_ang_16x16[12]     2061c->1500c, 27%
intra_ang_16x16[13]     2123c->1537c, 27%
intra_ang_16x16[14]     2090c->1590c, 24%
intra_ang_16x16[15]     2113c->1586c, 25%
intra_ang_16x16[16]     2224c->1603c, 28%
intra_ang_16x16[17]     2342c->1606c, 31%
intra_ang_16x16[18]     335c-> 217c,  35%
intra_ang_16x16[19]     1487c->910c,  39%
intra_ang_16x16[20]     1451c->920c,  36%
intra_ang_16x16[21]     1436c->871c,  39%
intra_ang_16x16[22]     1539c->819c,  47%
intra_ang_16x16[23]     1477c->794c,  46%
intra_ang_16x16[24]     1413c->785c,  44%
intra_ang_16x16[25]     1298c->727c,  44%
intra_ang_16x16[26]     520c-> 351c,  32%
intra_ang_16x16[27]     1311c->736c,  44%
intra_ang_16x16[28]     1422c->757c,  47%
intra_ang_16x16[29]     1415c->761c,  46%
intra_ang_16x16[30]     1418c->791c,  44%
intra_ang_16x16[31]     1410c->790c,  44%
intra_ang_16x16[32]     1456c->808c,  44%
intra_ang_16x16[33]     1333c->749c,  44%
intra_ang_16x16[34]     351c-> 201c,  43%