Folder Compression in LZW

[ninadakolekar]

Folder has to be recursively compressed, maintaining a directory structure.
Currently, it gives error on input directory in LZW program.

@ssirowa

[ninadakolekar]

I think we can use the current program and call it recursively to write only to one file.
For maintenance of directory structure, some additional information will have to be stored.

Modify only LZW files. Don't modify Huffman Codes.
@ssirowa