MSC: unsigned _dos_getfileattr( char *path, unsigned *attr )

	- prototype in dos.h

	- path = any valid DOS file name
	- attr = file attribute:

		_A_NORMAL
		_A_RDONLY
		_A_HIDDEN
		_A_SYSTEM
		_A_VOLID
		_A_SUBDIR
		_A_ARCH

	- returns zero on success; nonzero on failure
	- no corresponding function in Turbo C
	- see	INT 21,43