Use gtk.ListStore.insert

The append function of a ListStore is extremely slow.  Now I use  the
ListStore insert function, and manually track the size of the list
myself.

libsaria/collection/collection.py

@@ -11,7 +11,6 @@ ins_tree  = None
 class Collection:
 	def __init__(self):
 		self.tree = None
-		#self.load()
 
 	def __iter__(self):
 		if not self.tree:

libsaria/collection/tree.py

@@ -28,6 +28,7 @@ class Tree(dict):
 	def walk(self):
 		keys = self.keys()
 		keys.sort()
+		keys.reverse()
 		get_item = self.__getitem__
 		for key in keys:
 			for track in get_item(key).walk():

ocarina/collection.py

@@ -21,11 +21,10 @@ class Collection(gtk.ScrolledWindow):
 
 	def populate(self, func):
 		self.list.freeze()
-		append = self.list.append
+		insert = self.list.list.insert
 		for track in func():
-			#print track
 			get = track.__getitem__
-			append([get("id"),
+			insert(0, [get("id"),
 				get("title"),
 				get("length"),
 				get("artist"),