INT 31 P - DPMIsee DOS Protected-Mode Interface 0.9+ - ALLOCATE LDT DESCRIPTORS
	AX = 0000h
	CX = number of descriptors to allocate
Return: CF clear if successful
	    AX = base selector
	CF set on error
	    AX = error code (DPMIsee DOS Protected-Mode Interface 1.0+) (see #03143)
Notes:	DPMIsee DOS Protected-Mode Interface is the DOS Protected-Mode InterfaceAn API which provides basic services for protected-mode programs to allocate memory, invoke real-mode software, etc.  See also Virtual Control Program Interface.
	the base and limit of the returned descriptors will be 0, and the type
	  will be "data"
	add the value returned by INT 31/AX=0003h to move to subsequent
	  descriptors if multiple descriptors were allocated
	not supported by MS Windows 3.0 in Standard mode
SeeAlso: AX=0001h,AX=000Dh,INT 21/AX=3501h


(Table 03143)
Values for DPMIsee DOS Protected-Mode Interface 1.0 error code:
 0000h-7FFFh DOS error passed through by DPMIsee DOS Protected-Mode Interface
 8001h	unsupported function
 8002h	object in wrong state for function
 8003h	system integrity would be endangered
 8004h	deadlock detected
 8005h	pending serialization request cancelled
 8010h	out of DPMIsee DOS Protected-Mode Interface internal resources
 8011h	descriptor unavailable
 8012h	linear memory unavailable
 8013h	physical memory unavailable
 8014h	backing store unavailable
 8015h	callback unavailable
 8016h	handle unavailable
 8017h	maximum lock count exceeded
 8018h	shared memory already serialized exclusively by another
 8019h	shared memory already serialized shared by another client
 8021h	invalid value for numeric or flag parameter
 8022h	invalid segment selector
 8023h	invalid handle
 8024h	invalid callback
 8025h	invalid linear address
 8026h	request not supported by hardware