Replace --filter_lib with -b (force-enable) and -n (force-disable), and long-winded versions.  Resolves #150.
Merge pull request #156 from cgjones/rm-filter_lib-arg

Replace --filter_lib with -b (force-enable) and -n (force-disable), and long-winded versions.  Resolves #150.
Rename --record/--replay to record/replay.