Add prefix to Server member variables

Added the m_ prefix to Server member variables.

server/core/internal/server.hh

@@ -33,34 +33,33 @@ class Server : public SERVER
 public:
 
     Server()
-        : response_time(maxbase::EMAverage {0.04, 0.35, 500})
+        : m_response_time(maxbase::EMAverage {0.04, 0.35, 500})
     {
     }
 
     int response_time_num_samples() const
     {
-        return response_time->num_samples();
+        return m_response_time->num_samples();
     }
 
     double response_time_average() const
     {
-        return response_time->average();
+        return m_response_time->average();
     }
 
     void response_time_add(double ave, int num_samples)
     {
-        response_time->add(ave, num_samples);
+        m_response_time->add(ave, num_samples);
     }
 
-    // TODO: Do all access to Server via methods
-    mutable std::mutex lock;
+    mutable std::mutex m_lock;
 
 private:
     // nantti, TODO. Decide whether to expose some of this in config, or if the values
     // can be calculated at runtime. The "500" or sample_max affects how often a
     // session should updates this stat. sample_max should be slightly lower than max sample
     // rate (which is less than qps due to the noise filter).
-    mxs::rworker_local<maxbase::EMAverage> response_time;
+    mxs::rworker_local<maxbase::EMAverage> m_response_time;
 };
 
 void server_free(Server* server);