Most relevant code is much simpler now; there's no longer
a hard limit on the # of connections per DB.  All the
tests pass, but test coverage of the sprawling DB API isn't
very good.

Also gave WeakSet a suitable __contains__ implementation.

If nothing else, it highlights that the transaction package
got put in a wrong place (it and ZODB depend on each other).

Start simplifying the code.

Code cleanups.

Imports normalization.

Now use ZODB.utils.z64 instead of '\0\0\0\0\0\0\0\0' where appropriate.

Connection.root():  Repair error in docstring.

Remove duplicate declaration and definition of py___getstate__.

The tests here have to be run manually for now, so rename
the directory so test.py doesn't complain about it.

Duplicate import removed.

Merge revs 27788 and 27795 from Zope trunk.

See Collector #1350.

ghostify() and unghostify() detect one form of thread insanity
now.  In a debug build, they abort the process if it happens.
In a release build, unghostify() raises SystemError, and
ghostify() ignores it (ghostify() can't raise an exception).

See Collector #1350.

ghostify() and unghostify() detect one form of thread insanity
now.  In a debug build, they abort the process if it happens.
In a release build, unghostify() raises SystemError, and
ghostify() ignores it (ghostify() can't raise an exception).

before I went on vacation a couple weeks ago.

Use proto 1 pickles in ZEO/zrpc/Marshaller.encode().

This rehabilitates the good part of Andreas's change; adds
news; adds comments; and adds more comments about the
sequence of undocumented cPickle gimmicks this relies on.

This rehabilitates the good part of Andreas's change; adds
news; adds comments; and adds more comments about the
sequence of undocumented cPickle gimmicks this relies on.

Merge rev 27722 from Zope trunk.

Collector #1517: History tab for ZPT does not work

FileStorage.history() was reading the user, description,
and extension fields out of the object pickle, due to
starting the read at a wrong location.

Collector #1517: History tab for ZPT does not work

FileStorage.history() was reading the user, description,
and extension fields out of the object pickle, due to
starting the read at a wrong location.

Merge rev 27712 from Zope trunk.

Restore the Connection._opened attribute, actually used by
DB.connectionDebugInfo().

Restore the Connection._opened attribute, actually used by
DB.connectionDebugInfo().

Typo repair.

os.listdir() now prints errors on stdout

Transaction.begin().

When raising DeprecationWarning, point the warning machinery at
the caller, not at Transaction.begin() itself.  As is (voice
of experience <wink>), these warnings are darned near useless to
track down code that needs to be changed on Zope trunk.  With the
change, the warnings point directly at the deprecated uses.