tune.com: Updated to support using HBIOS sound driver

A new command line switch has been added '--hbios'.

Using this switch after the filename, will cause tune.com to play thru
the HBIOS sound driver

MYM file types are not supported thru HBIOS yet.

Source/Apps/Tune/cli.inc

@@ -0,0 +1,33 @@
+
+
+CLI_ABRT_IF_OPT_FIRST:
+	LD	A, (FCB+1)
+	CP	'-'			; OPTION FIRST OR - MISSING FILENAME?
+	JP	Z, ERRCMD		; SHOW USAGE
+	RET
+
+CLI_HAVE_HBIOS_SWITCH:
+ 	LD	HL, CLIARGS		; TEST FOR --HBIOS ON COMNMAND LINE
+	LD	DE, HBIOSOPT
+	CALL	STRINDEX
+	JR	NZ, CLI_HAVE_HBIOS_SWITCH1
+	OR	$FF			; IS NOT HBIOS
+	LD	(HBIOSMD), A
+	RET
+CLI_HAVE_HBIOS_SWITCH1:
+	AND	0			; IS HBIOS
+	LD	(HBIOSMD), A
+	RET
+
+CLI_ABRT_UNSUPPFILTYP:
+	PUSH	AF
+	ISHBIOS
+	JR	Z, CLI_ABRT_UNSUPPFILTYP1
+	POP	AF
+	CP	TYPMYM
+	RET	NZ
+	ERRWITHMSG(MSGUNSUP)		; EXIT WITH UNSUPPORTED FILE TYPE MESSAGE
+
+CLI_ABRT_UNSUPPFILTYP1:
+	POP	AF
+	RET