Optimize memory allocation for client buffer; add VLD to detect memory on Windows.

example/soap/calc_client/main.cc

@@ -5,7 +5,7 @@
 #include "calc_client.h"
 
 int main() {
-  LOG_INIT("", webcc::LOG_CONSOLE);
+  WEBCC_LOG_INIT("", webcc::LOG_CONSOLE);
 
   CalcClient calc;
 

example/soap/calc_server/main.cc

@@ -17,7 +17,7 @@ int main(int argc, char* argv[]) {
     return 1;
   }
 
-  LOG_INIT("", webcc::LOG_CONSOLE);
+  WEBCC_LOG_INIT("", webcc::LOG_CONSOLE);
 
   unsigned short port = std::atoi(argv[1]);