Apollo changes: [Hans Ostermeyer]

- Enable create when non-existing image name is given for omti8621 and sc499

SDL: fixed alt-tab from locking up the window system on Linux and Mac. [Hans Ostermeyer]

src/devices/bus/isa/omti8621.cpp

@@ -61,6 +61,7 @@ public:
 	virtual bool is_creatable() const override { return 1; }
 	virtual bool must_be_loaded() const override { return 0; }
 	virtual bool is_reset_on_load() const override { return 0; }
+	virtual bool support_command_line_image_creation() const override { return 1; }
 	virtual const char *file_extensions() const override { return "awd"; }
 
 	virtual image_init_result call_create(int format_type, util::option_resolution *format_options) override;

src/devices/bus/isa/sc499.h

@@ -41,6 +41,7 @@ public:
 	virtual bool is_creatable() const override { return 1; }
 	virtual bool must_be_loaded() const override { return 0; }
 	virtual bool is_reset_on_load() const override { return 0; }
+	virtual bool support_command_line_image_creation() const override { return 1; }
 	virtual const char *image_interface() const override { return "sc499_cass"; }
 	virtual const char *file_extensions() const override { return "act,ct"; }
 

src/mame/includes/apollo.h

@@ -363,6 +363,7 @@ public:
 	virtual bool is_creatable() const override { return 1; }
 	virtual bool must_be_loaded() const override { return 0; }
 	virtual bool is_reset_on_load() const override { return 0; }
+	virtual bool support_command_line_image_creation() const override { return 1; }
 	virtual const char *file_extensions() const override { return "ani,bin"; }
 
 	DECLARE_WRITE16_MEMBER(write);

src/osd/sdl/window.cpp

@@ -298,7 +298,7 @@ void sdl_window_info::toggle_full_screen()
 	machine().ui().menu_reset();
 	// kill off the drawers
 	renderer_reset();
-	set_platform_window(nullptr);
+//	set_platform_window(nullptr);
 	bool is_osx = false;
 #ifdef SDLMAME_MACOSX
 	// FIXME: This is weird behaviour and certainly a bug in SDL