Issue #280: Non-commensurable rank values

["Larry Golding (Myriad Consulting Inc)" <v-lgold@microsoft.com>]

Here’s the note that I added to incorporate the TC’s feedback on Issue #280: “Provide optional result.rank value of 0.0 to 100.0”:

NOTE 2: rank values produced by different tools need not be commensurable. If Tool A produces one result with rank 65 and a second result with rank 70, the consumer is entitled to assume that the second result is of higher priority than the first. But if Tool A produces a result with rank 65 and Tool B produces a result with rank 70, the result produced by Tool B might or might not be of higher priority than the result produced by Tool A. In an engineering system that aggregates results from multiple tools, rank values might need to be adjusted, either automatically or by end users, so that rank values from different tools can be interleaved in a meaningful way.

Larry