export_hg_commit: fix debug note
update_remote_branches: don't prepend '/' to heads
when pushing, check if server is advertising annotated tags
handle apply_delta() return value correctly
Merge branch 'rc/fix-ann-tags' into rc/master
update_remote_branches: refactor head usage
update_remote_branches: don't store de-refed tags
update references to Tag.get_object()