Adds support for ZIP files that include files that are symbolic links.
See the note in SSZipArchive.m for more information about that.
Includes a test that will probably only pass if you have GitHub for Mac
installed because that's the program I used as a test to symlink
against.
I created the symbolic link with 'ln -s /Applications/GitHub.app
SymbolicLink/GitHub.app' so I'm not entirely sure how it'll behave for
hard links, but I can't test that right now.
Julius Parishy
f900d38036