- FIX: DFS -c with list

- FIX: ADFS -c with list
- FIX: ADFS -e with list
- FIX: ADFS -e -> ADFS -e[R]

- FIX: bbcim_ddos_to_dfs: double sided DDOS diskimages.
- FIX: bbcim_w62_to_dfs: ditto

- Add: ADFS -d[R] (recursive for directories)
- Add: ADFS -a
- Add: ADFS -cR

- Add: DDOS/W62 catalogue/extract/delete/add/crc using the dfs functions with a offset.
- Add: -rename <disk> [-dir <dir>] <filename> <new filename>
- Add: Allow any track-interleaved diskformat? (e.g. Acorn DFS + DDOS)
- Add: -id : identify diskformat (single/doublesided,  dfs/ddos). It's not possible to do this in a foolproof way...
 -sectors nn: custom disksize (for DDOS)

Q -e with list, should suboption 'r'  remove  the  extracted files? (using -d)
Q - ADFS: ADFS is always 1 side?? can there be 2 single sided ADFS images on a disk?
Q - Rename? disk_combine_ss -> disk_ss_to_ds
    disk_split_ds   -> disk_ds_to_ss
