o Implement the remove verb to remove a partition entry.
o Improve error reporting by first checking that the verb is valid.
o Add an entry parameter to the add verb. this parameter can be
both read-only as welll as read-write and specifies the entry
number of the newly added partition.
o Make sure that the provider is alive when passed to us. It may
be withering away.
o When adding a new partition entry, test for overlaps with existing
partitions.
74d3377eaa