* thunar-vfs/thunar-vfs-path.{c,h}, thunar-vfs/thunar-vfs.symbols: Add
	  convenience method thunar_vfs_path_is_ancestor(), used to implement
	  the auto-expand in the tree pane.
	* docs/reference/thunar-vfs/: Update thunar-vfs API docs.
	* thunar/thunar-file.h: Add thunar_file_is_ancestor().
	* docs/README.thunarrc, thunar/thunar-preferences.c,
	  thunar/thunar-window.c: Add new preference LastSeparatorPosition,
	  which includes the last position of the gutter that separates the
	  side pane and the main view.
	* docs/README.thunarrc, thunar/thunar-preferences.c,
	  thunar/thunar-preferences-dialog.c: Add new preferences
	  TreeIconEmblems and TreeIconSize, similar to their shortcuts
	  counterparts.
	* thunar/thunar-tree-model.{c,h}, thunar/thunar-tree-pane.{c,h},
	  thunar/thunar-tree-view.{c,h}, thunar/Makefile.am,
	  thunar/thunar-window-ui.xml, thunar/thunar-window.c: Initial import
	  of the tree side pane. Still missing a lot of features, but the basics
	  are in place and the performance and memory overhead is quite good
	  already. Bug #1363.
	* po/POTFILES.in: Add new files.
	* po/Thunar.pot, po/*.po: Merge new strings.
	* po/de.po: Update german translations.




(Old svn revision: 20405)