MSC: unsigned _dos_settime( struct dostime_t *time )

	- prototype in dos.h

	- time = structure containing new time values
	- returns 0 on success or DOS error code on failure
	- sets MS-DOS time via INT 21,2D
	- DOS 3.3+ also sets CMOS clock

	- Turbo C uses settime()
	- see	INT 21,2D   _dos_gettime()