Consider adding implicit casting operators to (U)LARGE_INTEGER

[rickbrew]

These are the same as long and ulong, so working with this would be easier if I could do

ulong x = ...;
ULARGE_INTEGER uliY = x;
ulong z = uliY;

instead of having to do uliY.QuadPart = x; and z = uliY.QuadPart;

(not high priority for me, came across this while implementing CCW for IStream)

[tannergooding]

Marked this as help-wanted, but I'll get to it tomorrow if someone else doesn't grab it first.