[Dev] Fixed compilation errors with g++ 4.5.1 (e.g., missing math-related headers).
[Dev] Fixed compilation errors with g++ 4.5.1 (e.g., missing math-related headers).

airsim/rmol,airsim/rmol,jwakely/rmol,airsim/rmol,airsim/rmol,jwakely/rmol,jwakely/rmol,jwakely/rmol