[pyatspi2] Avoid caching children of MANAGES_DESCENDANTS objects

[Mike Gorse <mgorse src gnome org>]

commit c8b16a03b9666ceb0b6f8fa679ce1260171312ca
Author: Mike Gorse <mgorse novell com>
Date:   Sat Apr 10 18:23:04 2010 -0400

    Avoid caching children of MANAGES_DESCENDANTS objects

 pyatspi/cache.py |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/pyatspi/cache.py b/pyatspi/cache.py
index 012ca9d..3f66de8 100644
--- a/pyatspi/cache.py
+++ b/pyatspi/cache.py
@@ -253,6 +253,8 @@ class ApplicationCacheManager (object):
                 if interface==_ATSPI_EVENT_OBJECT_INTERFACE:
 		        if (sender, path) in self._cache:
 			        item = self._cache[(sender, path)]
+                                if item.state[0] & (1 << state.STATE_MANAGES_DESCENDANTS):
+                                        return
 			        if minor == "add":
 				        item.children.insert (detail1, any_data)
 			        elif minor == "remove":