Step revision to 1.60
Fix FileAttr and add inline/utf8 sending

* Fixed: File attribures parameter added in 1.50 ($extFileAttr) were not
used in Zip->addFile.
* Added: The ability to send the zip with a UTF-8 encoded filename, and
the ability to choose to send the file as "inline"
- Note, thanks to Mikael Ylikoski for these corrections and additions.
Merge pull request #16 from Grandt/1.60

1.60