INT 21 - LANtastic v3+ - GET INDIRECT FILE CONTENTS                             
	AX = 5FB5h
	DS:SI -> 128-byte buffer for ASCIZA NUL-terminated ASCII string.	The ASCIZ string "ABC" consists of the four bytes 41h, 42h, 43h, and 00h.  Unless otherwise specified, maximum lengths given in the interrupt list do not include the terminating NUL. indirect file contents
	ES:DI -> full ASCIZA NUL-terminated ASCII string.	The ASCIZ string "ABC" consists of the four bytes 41h, 42h, 43h, and 00h.  Unless otherwise specified, maximum lengths given in the interrupt list do not include the terminating NUL. path of indirect file
Return: CF clear if successful
	CF set on error
	    AX = error code
SeeAlso: AX=5FB4h