Compile subscriptions.xml into the libadblockplus build and make itusable

include/AdblockPlus/FilterEngine.h

 #ifndef ADBLOCKPLUS_FILTER_ENGINE_H
 #define ADBLOCKPLUS_FILTER_ENGINE_H
 
 #include <vector>
 #include <map>
 #include <string>
 #include <AdblockPlus/JsEngine.h>
 #include <AdblockPlus/JsValue.h>
 
 #include "tr1_memory.h"
@@ skipping 85 matching lines @@
   private:
     friend class FilterEngine;
     Subscription(FilterEngine& filterEngine, const std::string& url);
 #else
     Subscription(JsValuePtr value);
 #endif
   };
 
   typedef std::tr1::shared_ptr<Filter> FilterPtr;
   typedef std::tr1::shared_ptr<Subscription> SubscriptionPtr;
-  typedef void (*SubscriptionsCallback)(const std::vector<SubscriptionPtr>&);
 
   class FilterEngine
   {
 #if FILTER_ENGINE_STUBS
     friend class Filter;
     friend class Subscription;
 #endif
 
   public:
     explicit FilterEngine(JsEnginePtr jsEngine);
     FilterPtr GetFilter(const std::string& text);
     SubscriptionPtr GetSubscription(const std::string& url);
-    const std::vector<FilterPtr> GetListedFilters() const;
-    const std::vector<SubscriptionPtr> GetListedSubscriptions() const;
-    void FetchAvailableSubscriptions(SubscriptionsCallback callback);
+    std::vector<FilterPtr> GetListedFilters() const;
+    std::vector<SubscriptionPtr> GetListedSubscriptions() const;
+    std::vector<SubscriptionPtr> FetchAvailableSubscriptions() const;
     FilterPtr Matches(const std::string& url,
         const std::string& contentType,
         const std::string& documentUrl);
     std::vector<std::string> GetElementHidingSelectors(const std::string& domain) const;
 
   private:
     JsEnginePtr jsEngine;
 #if FILTER_ENGINE_STUBS
     std::map<std::string, FilterPtr> knownFilters;
     std::vector<FilterPtr> listedFilters;
     std::map<std::string, SubscriptionPtr> knownSubscriptions;
     std::vector<SubscriptionPtr> listedSubscriptions;
 #endif
   };
 }
 
 #endif