* Add patches to improve compatibility with newer versions of bzr: + 01_no_inventory: Don't rely on inventories being available + 02_elementtree: Use correct location of elementtree. Closes: #660728 + 03_info_controldir: Fix support for 'bzr xmlinfo' in empty control directories. + 04_no_revision_history: Avoid using deprecated `Branch.revision_history` call.