C++ code pattern from 8040121 is incorrect Reviewed-by: kvn
Fixed parfait warnings caused by __HI and __LO macros in sharedRuntimeMath.hpp by using a union. Reviewed-by: kvn, drchase
Factor out definitions of copysignA and scalbnA into new file sharedRuntimeMath.hpp Reviewed-by: dholmes, coleenp, kvn