- Fix url to forum.

- Fix Bit8u instead of char weirdness for imageDisk (dreamer_)
- Give device_t a virtual empty destructor so some warning program
  doesn't go crazy.
- Give the code that moves the Z drive its own function for readability.
- Give sizes arrays default values again for warning program.
- Rewrite IMGMOUNT in order to exit early for clarity and attempt
  to group things together.



Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@4267

src/hardware/mame/emu.h

@@ -123,6 +123,8 @@ public:
 	device_t(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 _clock) : clockRate( _clock ) {
 	}
 
+	virtual ~device_t() {
+	}
 };