Scrypt dependency.
Meta key required to modify metadata.

Of course, that is only true when the key's scrypt hash is found.
Updated plans for metadata and write access.
Todo: update read access description.
Auto-hide keys.
Write key password protection

First working implementation.
Note that the plugs might not be adequate, especially with regards to error
messages, when dealing with password-protected files.

Note that the current implementation does not take subtree into account; it is
file-oriented only.
Close folders after use.
Camp update.
Readkey implemented.
fixed folder creation vs. readkey
Stop function on meta reading error.
Prevent the read(1) API call to show key hashes in metadata.

And prevent crash when driver unavailable during an open / close operation on a
file.

Also, updated copyright.
fsapi: removed erroneously present error check.
withhold → withheld