Refactor LoadFeeTrack into ILoadFeeTrack, split DatabaseCon out from Application.h

Conflicts:
	src/cpp/ripple/Application.cpp

modules/ripple_basics/ripple_basics.h

@@ -113,6 +113,10 @@ namespace boost {
 // UInt256
 #include <boost/functional/hash.hpp>
 
+// ripple_PlatformMacros.h
+#include <boost/bind.hpp>
+#include <boost/function.hpp>
+
 // VFALCO: TODO, remove this dependency!!!
 #include <openssl/dh.h> // for DiffieHellmanUtil
 #include <openssl/ripemd.h> // For HashUtilities