maps: disable iterating methods of RevMap Since __iter__ is disabled in SqliteRevMap, we want to avoid the pattern iterating RevMap as well. This patch disables all entries to keys, values and items and makes it possible to bypass the restriction by setting "_allowiter". Developers looking for a way to iterate the RevMap should add a new method in RevMap and SqliteRevMap instead. The rebuildmeta test needs iteration so we enable it explicitly there.

#!/bin/sh
mkdir temp || exit 1
cd temp
svnadmin create repo
svn co file://`pwd`/repo wc
pushd wc
mkdir -p project/trunk
svn add project
svn ci -m 'trunk'
cd project/trunk
echo a > a
mkdir narf
svn add a narf
svn ci -m 'file and empty dir'
popd
svnadmin dump repo > ../empty_dir_in_trunk_not_repo_root.svndump
echo 'dump in empty_dir_in_trunk_not_repo_root.svndump'
echo 'you can probably delete temp now'