Add roundUp(unsigned size, unsigned mult) and roundDn(unsigned size, unsigned mult) to 64-bit host in src/jit/jit.h
Add roundUp(unsigned size, unsigned mult) and roundDn(unsigned size, unsigned mult) to 64-bit host in src/jit/jit.h

wtgodbe/coreclr,wtgodbe/coreclr,krk/coreclr,krk/coreclr,wtgodbe/coreclr,krk/coreclr,cshung/coreclr,wtgodbe/coreclr,cshung/coreclr,poizan42/coreclr,mmitche/coreclr,wtgodbe/coreclr,poizan42/coreclr,mmitche/coreclr,cshung/coreclr,poizan42/coreclr,mmitche/coreclr,poizan42/coreclr,mmitche/coreclr,wtgodbe/coreclr,krk/coreclr,mmitche/coreclr,krk/coreclr,cshung/coreclr,poizan42/coreclr,poizan42/coreclr,cshung/coreclr,krk/coreclr,cshung/coreclr,mmitche/coreclr