Add a property for overriding FP precision.

This merges the Stephen's CL 32c56ec on Jun. 1. It also renames
RSInfo::{Full,Relaxed,Imprecise} to RSInfo::{FP_Full,FP_Relaxed,
FP_Imprecise} which is more descriptive.

Change-Id: I6f202524d58a7f5a9dd8ea122aa0fd81162291b0
3 files changed