*: Change most or all references to {quote:ClassAd} and {quote:AttrList} with {quote:CompatClassAd}.
*: Swap in Varghese's new {quote:ClassAdList} class.
-*: Fix up the one or two callsites that move an ad from one {quote:ClassAdList} to another.
+*: Fix up the one or two callsites in matchmaker.cpp that move an ad from one {quote:ClassAdList} to another.
*: The following methods will need some fixing at the callsites:
*:: ClassAd::Insert(ExprTree*)
*:: ClassAd::Lookup()
