add an ar_entry_zip_get_raw_name to read zip entry raw name

[comicfans]

due to zip format not restrict for name encoding, filename can be encoded as many variants. this interface get original filename without encoding convert and slash replace (but only preserve part before \0 if invalid null terminator inside filename)

[selmf]

Great! I'll take care of the rest. If possible, I'd also like to credit you in the AUTHORS file, so I need a name and an email address I can add for you.

[comicfans]

Thank you, you can use Wang Xinyu (comicfans44 at gmail.com) as my name/mail

[selmf]

Done.