- Completed support for 'task 1 depends:2,-3' to manipulate the
dependencies.
- Now supports rc.dependency.reminder to indicate when to nag about
dependency chain violations, defaulting to on.
- Now supports rc.dependency.confirm to require confirmation before
fixing dependency chains, defaulting to on.
- New source file dependency.cpp which implements a low-level API for
determining dependency status, and assorted handlers for task state
changes.
- Adds blocking tasks to the 'next' report.
- Added more dependency unit tests, changed the wording in a couple of
them and numbered them for easy reference.
- All tests (I hope) now properly remove completed.data on exit, which
should prevent certain non-deterministic tinderbox results caused by
residual data.
- The dependencies.t unit test script failed to unlink completed.data,
which polluted the subsequent test script.
- Simplified some Perl in start.t.
- Allowed for line wrapping in start.t.
