Show the user progress when loading the cache

(Bitbake rev: bdd7813d8eecf7b6b636322e748ca6bf69118513)

Signed-off-by: Bob Foerster <robert@erafx.com>
Signed-off-by: Chris Larson <chris_larson@mentor.com>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>

bitbake/lib/bb/event.py

@@ -324,6 +324,25 @@ class ParseProgress(Event):
     def __init__(self, current):
         self.current = current
 
+class CacheLoadStarted(Event):
+    """Loading of the dependency cache has begun"""
+    def __init__(self, total):
+        Event.__init__(self)
+        self.total = total
+
+class CacheLoadProgress(Event):
+    """Cache loading progress"""
+    def __init__(self, current):
+        Event.__init__(self)
+        self.current = current
+
+class CacheLoadCompleted(Event):
+    """Cache loading is complete"""
+    def __init__(self, total, num_entries):
+        Event.__init__(self)
+        self.total = total
+        self.num_entries = num_entries
+
 class DepTreeGenerated(Event):
     """
     Event when a dependency tree has been generated