[ros-diffs] [greatlrd] 23784: 1. Rewote atan.c to pure asm 2. Rewote log10 to pure asm 3. Delete unuse c/asm files like ceil, cos, fabs, flor, sin, sqrt, and tan 4. Switch to rtl asm version of pow 5. Follow need be convert to asm atan2, exp, fmod, ldexp 6. Follow need c version atan2, exp, fmod, ldexp, atan, log10, pow 7. Add i386 arch dections in rbuild for asm/inline asm so we using only i386 asm on x86 cpu