instead of clearing them.

Collector 952 (--with-python that has no trailing arg causes it to be passed to Python configurator, which raises an inscrutable error).

new comment block explains the cause and the cure.

        which is aware of extension classes that fill 'tp_callable'
        but don't define '__call__'.

      - Made KeywordIndex be more robust about receiving a value that
        is not a string or an iterable type.

Add an sdist target to the Makefile which builds a tarball source
distribution.

If the target version is not found, use the first "most acceptable" version found instead of the last.

a setup.py build_ext -i in order to prevent needing to needlessly rebuild
C extensions after a straight 'make' is performed.

Cleaned up makefile and added comments.

Also, moved mkzopeinstance and mkzeoinstance into 'utilities'.  It makes
more sense for 'bin' to be disposable in the face of inplace builds.

Change directories for build-tmp, build-lib, and build-scripts so they don't get copied to the install directory during 'make install'.

Also, change 'make clean' to remove '.so' files and not try to remove core files.

- Added OrderSupport and OrderedFolder.
- Added optional 'id' argument to Folder constructor.
- Modified main.dtml to play well with Folder and OrderedFolder.

contains a version name. If it does, then we check whether the user
globally has permission to join/leave versions. If they don't, we
clear cookie and raise Unauthorized. This will abort any changes that
might have been made during traversal. (If some traversal code makes
changes and commits them, then we still lose and probably deserve to.)