Server: With -daemon, disable standard output

The server is headed towards being a background process; for now,
the -daemon option is used when the server is started in background
mode.

doomsday/client/src/dd_init.cpp

@@ -174,6 +174,14 @@ int main(int argc, char** argv)
         }
 #endif
 
+#ifdef __SERVER__
+        if(dengApp.commandLine().has("-daemon"))
+        {
+            // In server mode, stay quiet on the standard outputs.
+            LogBuffer_EnableStandardOutput(false);
+        }
+#endif
+
         dengApp.initSubsystems();
 
         Libdeng_Init();

doomsday/client/src/dd_pinit.cpp

@@ -132,7 +132,7 @@ void DD_ConsoleInit(void)
     Str_Init(&nativePath); Str_Set(&nativePath, outFileName);
     F_ToNativeSlashes(&nativePath, &nativePath);
 
-    // We'll redirect stdout to a log file.
+    // We'll redirect log output to a file.
     outFileOk = LegacyCore_SetLogFile(Str_Text(&nativePath));
     Str_Free(&nativePath);