change threading.getIdent to a property

This is new in 2.6 so now need to worry about backwards compatibility :)
diff --git a/Misc/NEWS b/Misc/NEWS
index 09f1138..7a0838e 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -422,7 +422,7 @@
 
 - Issue #2870: cmathmodule.c compile error.
 
-- Added a threading.Thread.getIdent() method.
+- Added a threading.Thread.ident property.
 
 Library
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