Function CallStr

Used together with PARAM to VLOG calls made to the stream. Intended to be used like this: VLOG(1) << CallStr("MyFunction", this, {PARAM(a), PARAM(b)}); where a and b are the parameters to MyFunction. See VLOG_CALL for a short-hand for this. This way of doing it saves a tremendous amount of boilerplate code given how many functions there are on Stream and how many parameters they each have.