tvrkba DEPRECATED

	tvrkba(fcolor.i2.r, bcolor.i2.r, blink.i2.r, kb_case.i2.r)

	This routine will return the current keyboard attributes (colors of 
	characters typed in the color TV window). fcolor, bcolor, and blink 
	are set to the foreground color code, backbround color code, and blink 
	code respectively.  kb_case will be set to one of TV_UPPER_CASE_ONLY, 
	TV_MIXED_CASE or TV_LOWER_CASE_ONLY.

	This function requires the following include files:

	clib_h

	Related functions:

	tvkbat, tvcase