numbers were not rendered correctly

"foo=bar; hmm; baz=gee" will give an empty value for 'hmm' instead of
silently discarding it and the rest of the string. (Thanks to 'sirilyan'
for the patch.)

bin/zopectl test now uses os.execv, instead os os.system, so that options with characters that needs shell quoting doesn't break the command.

Updated doc/UNITTEST.txt and lib/python/Testing/README.txt to reflect progress made since UNITTEST.txt was originally written.

specified in the Content-Type header. (Collector #1510)

      - Collector #1593: fixed dumb _get_id() implementation in
        OFS.CopySupport that produced copy_of_copy_of....files

      - Collector #1450: files in utilities/ZODBTools are now installed
        during the installation process in the 'bin' directory

        to zope.conf to specific the maximum length of a HTTP request
        header before it is considered as a possible DoS attack and
        discarded.

      - Collector #1371: added new 'cgi-maxlen' directive to zope.conf 
        to limit the amount of form data being processed by Zope 
        to prevent DoS attacks

      - Collector #1407: changed WebDAV display name for objects
        to title_or_id() 

        hostnames instead of IP addresses only (patch by Dieter Maurer)

Use proper if REQUEST is not None everywhere.

debug mode and if the user is not Manager). This allows for better
debugging, while still keeping the possibility for a Manager to delete
buggy objects.

        for non-ascii characters.

Collector #1577: Fixed cryptic error message in ZPublisher if a non-ASCII string is passed to a date, int, long or float property.

web pages or HTTP headers.

servers.

MultiHook made the bogus assumption that hooks defined in classed would
use the same signature as hook functions added to instances. Well, they
*would*, but only after being transformed into bound methods. This means
that the before-publishing-traversal hook will have call signature
(container, request) as a function, but (self, container, request) as a
method, with self==container.

  "javascript" as editable through the File edit form, just like
  text/<foo> types

I thought I had merged this before but clearly not :-(
Also fixed a deprecation warning in testZopePageTemplate.py.

  return correctly formatted ISO 8601-representations to augment
  the ISO method which isn't compliant with ISO 8601.