Add new features to the config command for control of the config file:

- manipulate the autoexec section
- display information on sections and values
- show the used config files and startup command line parameters 
- restart capability
- save config files either in the config or program directory

Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@3651

src/debug/debug.cpp

@@ -2113,7 +2113,7 @@ void DEBUG_SetupConsole(void) {
 	DBGUI_StartUp();
 }
 
-static void DEBUG_ShutDown(Section * /*sec*/) {
+void DEBUG_ShutDown(Section * /*sec*/) {
 	CBreakpoint::DeleteAll();
 	CDebugVar::DeleteAll();
 	curs_set(old_cursor_state);