INT 67 - Q87 v4+ - PREPARE TO UNLOAD AND GET XMSsee Extended Memory Specification HANDLE FOR Q87 MEMORY
	AX = 2833h
	EAX = 29482833h (entire EAX value required)
Return: EAX = XMSsee Extended Memory Specification handle for memory allocated when Q87 was installed
	EBX = status
	    00000000h Q87 is in demo mode (countdown running);
			  Q87 remains active
	    00000001h Q87 is in registered mode; memory manager's IDTsee Interrupt Descriptor Table, GDT,
			  and optionally CR0 (if BL <> 5Fh on entry) have
			  been restored
	    00000002h Q87 is in demo mode (demo time has expired);
			  Q87 remains active
Note:	this call is used by UNLOAD87 to release the memory used by Q87
BUG:	v4.00-v4.03 will hang on most machines when run under bare DOS with
	  no memory manager, because neither Q87 nor UNLOAD87 checks whether
	  there is a valid INT 67 handler before performing an installation
	  check via INT 67
SeeAlso: AX=4321h,INT 21/AX=4321h/BX=0000h