[x265] [PATCH 0 of 6 ] SAO SSE4 asm code for HIGH_BIT_DEPTH

[dnyaneshwar at multicorewareinc.com]

SAO_EO_0        8.97x    974.03          8740.81
SAO_EO_1        10.18x   492.67          5017.42
SAO_EO_1_2Rows  11.21x   900.82          10095.86
SAO_EO_2[0]     6.27x    207.22          1298.92
SAO_EO_2[1]     8.92x    555.20          4949.69
SAO_EO_3[0]     4.97x    236.72          1177.29
SAO_EO_3[1]     8.67x    551.14          4778.67
SAO_BO_0        7.50x    23127.89        173346.66