INT 21 - Phar Lap 386/DOS-Extender VMM - NEW LOAD PROGRAM FOR DEBUG

	AX = 252Ah
	DS:EDX -> ASCIZ program name
	ES:EBX -> parameter block (see #01363)
	ECX = size of LDT buffer in bytes
	ESI = bit flags
	    bit 0: allow demand paging rather than loading entire program
	    bit 1: demand page from swap file rather than from .EXP
Return: CF clear if successful
	    EAX = VMM handle or FFFFFFFFh if none
	    ECX = number of descriptors in LDT buffer
	CF set on error
	    EAX = error code
		02h file error
		    EBX = file error code (see #01370)
		    ECX = DOS error code if EBX=1,2,3, or 8
		08h insufficient memory
		    EBX = memory error code (see #01371)
		80h LDT buffer too small
		87h called twice without intervening call to AX=2531h
SeeAlso: AX=2512h,AX=2517h,AX=2529h,AX=2531h