Capture stderr of run solutions

[kezsulap]

Imagine I have some solution which runs through a number of cases and adds up the results and a good way to measure how good a test is how many of those partial results are non-zero, or how many cases there were in the first place, the most natural way to get stats on this would be to get the solution keep track of that number for all the tests and just output to cerr number it has been computing anyway
It would be nice if sinol-make run had some option to capture that output and include it in the table with scores