tests: removed redundant "-d '0 0'" from test scripts The tests are executed with a .hgrc file which adds "-d '0 0'" by default.

Merge with crew-stable

convert/bzr: make it work with filemaps (issue1631) The bzr converter maintains a child -> parents mapping and drop entries whenever a child is read. It does not work with filemaps, getchangedfiles() may be called more than once when filtered files belong to merge revisions. getchanges() still works that way but it is not clear whether a similar issue can arise when interacting with merges.