INT 7F - Alloy MW386 - CHANGE NAME OF DOS TASK                                  
	AH = E3h
	DS:DX -> 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. task name
---v1.x---
	AL = user number
---v2+---
	BH = user number
	BL = task number
Return: CF clear if successful
	CF set on error (invalid process number)
SeeAlso: AH=E0h,AH=E4h,AH=E5h