Package: expose file size property.

simgear/package/Package.cxx

@@ -151,6 +151,11 @@ std::string Package::name() const
     return m_props->getStringValue("name");
 }
 
+size_t Package::fileSizeBytes() const
+{
+    return m_props->getIntValue("file-size-bytes");
+}
+  
 std::string Package::description() const
 {
     return getLocalisedProp("decription");

simgear/package/Package.hxx

@@ -89,7 +89,9 @@ public:
     std::string getLocalisedProp(const std::string& aName) const;
 
     unsigned int revision() const;
-    
+  
+    size_t fileSizeBytes() const;
+  
     CatalogRef catalog() const
         { return m_catalog; }