Fix bug 2807 (support metadata removal for cases where we
	move/delete files) by implementing metadata removal.

	Fix bug 2199 (Saved icon positions ruin desktop layout features)
	by testing and fixing other bugs now that metadata removal is
	implemented.

	Fix bug 5164 (exception trying to drag file) by fixing a few
	placeholders in XML files that were still transparent and should
	not be.

	Fix bug where we don't reveal the New Folder icon (reintroduced by
	my changes yesterday) by computing the icon position in a way that
	works even before the canvas item is updated.

	* libnautilus-extensions/nautilus-directory-metafile.c:
	(get_file_node): Small change (not used for now) that might
	help unify the "before metafile is read" case with the code
	after the metafile is read.
	(nautilus_directory_rename_file_metadata): Remove the old
	file metadata before renaming the new data. Also change code
	to avoid looking up things in the hash table twice.
	(nautilus_directory_copy_file_metadata): Updated and added
	FIXME comments.
	(nautilus_directory_remove_file_metadata): Add code to
	remove metadata, similar to the existing rename code.

	* libnautilus-extensions/nautilus-directory.c:
	(nautilus_directory_schedule_metadata_copy),
	(nautilus_directory_schedule_metadata_move),
	(nautilus_directory_schedule_metadata_remove): Fix code that was
	using file names instead of relative URIs (essentially escaped
	file names). This code was missed when we made the
	switchover. Without this, changes to files with spaces in their
	names didn't update metadata properly.

	* libnautilus-extensions/nautilus-file-operations.c:
	(build_error_string): Added blank line between the intro sentence
	and the rest of the error message.
	(handle_xfer_overwrite): Added blank line between the intro
	sentence and the rest of the error message.
	(sync_xfer_callback): Fix metadata code to remove the metadata
	when creating a new file, just as it copies metadata when copying
	a file. This change helps the New Folder case, but requires a fix
	in gnome-vfs to set the top level boolean for the New Folder case.
	(handle_new_folder_vfs_error): Added blank line between the intro
	sentence and the rest of the error message.
	(nautilus_self_check_file_operations): Changed the self-check to
	use the standard way of testing functions that return text instead
	of rolling its own.

	* libnautilus-extensions/nautilus-gnome-extensions.h:
	* libnautilus-extensions/nautilus-gnome-extensions.c:
	(nautilus_gnome_canvas_item_get_canvas_bounds): Added a function
	that's like nautilus_gnome_canvas_item_get_current_canvas_bounds
	but is accurate even before the icon is updated.

	* libnautilus-extensions/nautilus-icon-container.c: (reveal_icon):
	Use nautilus_gnome_canvas_item_get_canvas_bounds instead of
	nautilus_gnome_canvas_item_get_current_canvas_bounds. Fixes the
	bug I reintroduced where New Folder icons would not be revealed.

	* libnautilus-extensions/nautilus-xml-extensions.h:
	* libnautilus-extensions/nautilus-xml-extensions.c:
	(nautilus_xml_remove_node): Add a remove-node function. This is
	needed because gnome-xml doesn't have xmlRemoveNode
	implemented. This implementation is not quite complete, but
	probably good enough for our purposes. A complete implementation
	might have to have some handling for removing the root node and
	perhaps some stuff to remove unused namespaces. Maybe this can be
	rolled into gnome-xml.

	* src/file-manager/nautilus-directory-view-ui.xml:
	* src/nautilus-shell-ui.xml:
	Added some more delimit="none" entries to make it so that the
	actual placeholder definitions are not "transparent".

	* libnautilus-extensions/nautilus-glib-extensions.c
	(nautilus_self_check_glib_extensions): Marked some strings that
	are part of a test translatable since the result might be
	different in some locales. Translating the strings to the right
	result makes "make check" work properly in that locale.