Codechange: Template DoCommandP to automagically reflect the parameters of the command proc.

When finished, this will allow each command handler to take individually
different parameters, obliviating the need for bit-packing.

src/toolbar_gui.cpp

@@ -49,6 +49,7 @@
 #include "framerate_type.h"
 #include "guitimer_func.h"
 #include "screenshot_gui.h"
+#include "misc_cmd.h"
 
 #include "widgets/toolbar_widget.h"
 
@@ -265,7 +266,7 @@ static CallBackFunction ToolbarPauseClick(Window *w)
 {
 	if (_networking && !_network_server) return CBF_NONE; // only server can pause the game
 
-	if (DoCommandP(CMD_PAUSE, 0, PM_PAUSED_NORMAL, _pause_mode == PM_UNPAUSED)) {
+	if (Command<CMD_PAUSE>::Post(0, PM_PAUSED_NORMAL, _pause_mode == PM_UNPAUSED, {})) {
 		if (_settings_client.sound.confirm) SndPlayFx(SND_15_BEEP);
 	}
 	return CBF_NONE;