Track uptime. Update local fee schedule based on load manager.

src/cpp/ripple/LoadManager.h

@@ -86,6 +86,9 @@ protected:
 	int mDebitWarn;				// when a source drops below this, we warn
 	int mDebitLimit;			// when a source drops below this, we cut it off (should be negative)
 
+	bool mShutdown;
+	int mUptime;
+
 	mutable boost::mutex mLock;
 
 	void canonicalize(LoadSource&, const time_t now) const;
@@ -94,9 +97,13 @@ protected:
 
 	void addLoadCost(const LoadCost& c) { mCosts[static_cast<int>(c.mType)] = c; }
 
+	void threadEntry();
+
 public:
 
 	LoadManager(int creditRate = 10, int creditLimit = 50, int debitWarn = -50, int debitLimit = -100);
+	~LoadManager();
+	void init();
 
 	int getCreditRate() const;
 	int getCreditLimit() const;
@@ -113,6 +120,7 @@ public:
 	bool adjust(LoadSource&, LoadType l) const;
 
 	int getCost(LoadType t)		{ return mCosts[static_cast<int>(t)].mCost; }
+	int getUptime();
 };
 
 class LoadFeeTrack