[commit] rev 571: Patch from Thierry Volpiatto: dvc-bookmarks.el: New function dvc-bookmarks-show-or-hide-all-subtrees (bound to Ha)

Committed revision 571 to http://bzr.xsteve.at/dvc/

Patch from Thierry Volpiatto: dvc-bookmarks.el: New function
dvc-bookmarks-show-or-hide-all-subtrees (bound to Ha)