Archive comment not set for zip decoding

[tmathews]

I solved it by adding the following line to the zip decodeBuffer method:

archive.comment = directory.zipFileComment;

Please add this fix in if it is deemed appropriate. Thanks.

[Breschling]

Each file in the archive may have a comment too.

This additional line per ArchiveFile may fix the problem:

file.comment = zfh.fileComment;

Would be great if you could add archive comments.