Try to use the built in test runner in boost build, and try to get test logs into travis

This is an early attempt to switch to the test runner built into Boost.Build. Unfortunately, it is less flexible than the old set up, and we cannot run several different kinds of tests, aside from changing the compiler. Perhaps we can move some of that functionality from travis into th jamfile by passing commandline arguments?

Every test will unfortunately be the same, and we're giving up valgrind for now. Most likely we'll go back to using the previous setup until we no longer need travis, at which point we'll just enable the test runner, and remove the extra setup needed to make the exe for use with valgrind, etc.

I had wanted to try the <test-helper> feature, but it looks like it only supports individual tests, and doesn't provide any benefit over our current setup