Patch implements improvements and instruction encodings for many COP1 instructions for handling floating point values. Patch covers load, store, basic arithmetic, data movement for FPR<->FPR, GPR<->FPR, FPR<->GPR, and format conversion instructinos. Added instruction encodings: Load: lb, lh, lwc1, ldc1 Store: sb, sh, swc1, sdc1 FP arith: abs_d, abs_s, add_d, add_s, div_d, div_s, mul_d, mul_s, sqrt_d, sqrt_s, sub_d, sub_s FP movs: mfc1, mov_d, mov_s, movn_d, movn_s, movz_d, movz_s, mtc1 Conversion: cvt_d_l, cvt_d_s, cvt_d_w, cvt_s_d, cvt_s_l, cvt_s_w, trunc_l_d, trunc_l_s, trunc_w_d, trunc_w_s R=stichnot@chromium.org Review URL: https://codereview.chromium.org/2341713003 . Patch from Srdjan Obucina <Srdjan.Obucina@imgtec.com>.
