A test failed on draco (MacPPC) because it took 49 seconds to get around to running the test, and the node had already stopped itself when the hotline file was 40 seconds old.
This means that the tests still work if you are executing them from a CWD other than the src dir -- *if* the "bin/tahoe" is found at os.path.dirname(os.path.dirname(os.path.dirname(allmydata.__file__))).
If no file is found at that location, then just skip the tests of executing the "tahoe" executable, because we don't want to accidentally run those tests against an executable from a different version of tahoe.
This is necessary because loading allmydata code now depends on PYTHONPATH manipulation which is done in the "bin/tahoe" script. Unfortunately it makes test_runner slower since it launches and waits for many subprocesses.
* use new decentralized directories everywhere instead of old centralized directories
* provide UI to them through the web server
* provide UI to them through the CLI
* update unit tests to simulate decentralized mutable directories in order to test other components that rely on them
* remove the notion of a "vdrive server" and a client thereof
* remove the notion of a "public vdrive", which was a directory that was centrally published/subscribed automatically by the tahoe node (you can accomplish this manually by making a directory and posting the URL to it on your web site, for example)
* add a notion of "wait_for_numpeers" when you need to publish data to peers, which is how many peers should be attached before you start. The default is 1.
* add __repr__ for filesystem nodes (note: these reprs contain a few bits of the secret key!)
* fix a few bugs where we used to equate "mutable" with "not read-only". Nowadays all directories are mutable, but some might be read-only (to you).
* fix a few bugs where code wasn't aware of the new general-purpose metadata dict the comes with each filesystem edge
* sundry fixes to unit tests to adjust to the new directories, e.g. don't assume that every share on disk belongs to a chk file.
