BaseStorage's copyTransactionsFrom() method's "other" argument.

an extension class

       to Managers and Authenticated users instead to Anonymous users.
       This restricts access to the Control_Panel and especially
       to the Products management to trusted users.

environment but not on a fresh checkout.

       permitted and will raise an exception. Copies of locked objects
       are copied without lock.

- Pasted objects are copied without WebDAV locks

  attribute by calling "image.tag(border='')".

inside the ZMI

- added env. variables for input/output encodings

provided by the unittest framework.

found.

path names.

- use random.randrange() instead of whrandom.randint()
- commented some code that appears unused
- normalize whitespace

Close an autopack race, where if a store was done after a sweep, but
before the collect_objs, the stored object would stay in packmark
until the next pack, preventing any objects it references from being
counted in the root-reachable test.

I don't have time to write a test case for this. :(

pack(): After we acquire the packlock, but before we set the packing
flag to True, we clear the packmark table.

_dopack(): Use the convenience wrapper _withlock method.

just in case someone can make it take less time.
(This one takes 40 seconds of an 11-minute test run for me.)

- minor nits