MSC: void _putimage(short x, short y, char huge *image, short action)

	MSC: void far _putimage_w( double wx, double wy,
				   char huge *image, short action )

	- prototype in graph.h

	- restores previously saved screen image to screen
	- (x, y) upper left corner of image
	- image = buffer containing previously saved image
	- action = defines interaction between current screen buffer and
		   the data stored in "image"
		 = _GAND	AND image with current screen
		 = _GOR		OR image with current screen
		 = _GPRESET	overwrite current screen with inverse of image
		 = _GPSET	overwrite current screen with exact image
		 = _GXOR	XOR's image to current screen

	- Turbo C uses putimage()
	- see	_getimage()   _imagesize()