CHNHCDNG V1.01, simple program by Jonathan Forster to change the coding of a 
				.ADF file from 2s complement to offset binary or vice versa

	Usage: chngcdng [options] file.adf
		where options are:
			-2 only convert 2s complement files to offset binary
			-o only convert offset binary files to 2s complement
			-y yes, don't ask me
		file.adf may be a wildcard
