Hybrid search limits

[niklasf]

This is a feature request of sorts: It would be nice if search limits could be composed. For example

go wtime 1000 btime 2000 movetime 300

could stop the search based on time management or the absolute movetime limit, whichever is hit first.

To be fair, a sufficiently advanced GUI can already come close to his by sending stop itself.

Edit: It looks like wtime/btime is an exception. The other limits can already be combined.