- modernize a type-check

- modernize several type-checks
- remove unused imports

referenced for too long.

case if we're aborting e.g. a transactional undo.

You never need an __del__ to close a file.  A file closes itself when
it is deallocated.

Don't give an object a magic __del__ attribute.  It won't work with
new-style classes, and it's obscure anyway.

(The "build" target used to be an in-place build, but someone changed
that.)

- remove unused imports
- misc. cleanup

- normalize whitespace

- avoid normalizing whitespace when using the default text when there is not
  a matching translation
- added support for explicit msgids in the i18n:attributes syntax

When loading a PageTemplateFile that's not XML, make sure it ends up
loaded in text mode. This was a problem for Windows.

I've fixed the various scripts etc. in the CVS so that I can now install a ZEO client/server setup. The way it actually ended up working is:

- runzope.py and zopectl.py are moved to Zope/Startup/run.py and Zope/zdaemon/zopectl.py respectively
- bin/mkzopeinstance now takes a "-z/--zeo host:port" which sets up a custom_zodb.py in the new zope instance home
- bin/mkzeoinstance now overrides less, because...
- ZEO/mkzeoinst.py generates an additional script, runzeo, which is the "runner" for the ZEO server. Both it an the zeoctl script need to know about the ZOPE_HOME, so that's been added to the scripts (via the params)
- fixed setup.py so it installed ZEO/schema.xml

 - the scripts won't be in the user's $PATH, so override that lookup
   in from mkzeoinst.py in the mkzeoinstance script
 - the scripts won't be executable, so prepend commands with $python

when vid <> ZERO.  Also, rename a local variable.

_dotxnundo(): Fix insertion of information into the currentVersions
table.  Key should be vid and value should be revid.

_collect_objs(): It's possible the vid,revid pair has already been
deleted so catch DBNotFoundErrors.

These seem to fix the last of the BDBFull test failures.

      - Collector #683: WeDAV request without XML preamble
        were not recognized by Zope and raised an exception.

the --quiet parameter.

versions were much too verbose by default.