Tests fail on name provided with options

[silkentrance]

If one provides a name via the options, then existing tests will fail. This is due to the fact that the provided name circumvents the random name generation.

Tests must be fixed so that when using custom provided names, these files or directories will be cleaned up after each test run.

The failing tests are test/dir-sync-test.js and test/file-sync-test.js with the names having already been taken by test/dir-test.js and test/file-test.js.

[silkentrance]

Must reopen as the provided fix did not work.

[silkentrance]

After having looked into this further, it shows that dir-test and dir-sync-test are competing for the same resource (using name test). The order by which these test suites/batches are run is important, as dir-test will not call upon the remove callback.

[silkentrance]

fixed with #137