- updated common code from screenjob branch.

That is, all parts not related to cutscenes.

src/d_main.cpp

@@ -3043,6 +3043,11 @@ static void GC_MarkGameRoots()
 	GC::Mark(NextToThink);
 }
 
+static void System_ToggleFullConsole()
+{
+	gameaction = ga_fullconsole;
+}
+
 bool  CheckSkipGameOptionBlock(const char* str);
 
 //==========================================================================
@@ -3091,6 +3096,10 @@ static int D_DoomMain_Internal (void)
 		nullptr,
 		CheckSkipGameOptionBlock,
 		System_ConsoleToggled,
+		nullptr, 
+		nullptr,
+		System_ToggleFullConsole,
+		nullptr,
 	};