Log Message:
Import unalz, packaged by Lee Jae-Hong (pyrasis at chol dot com) and
modified by me.

unalz is a multi platform open-source ALZ extractor.  It is a console
version of tzip (http://www.kipple.pe.kr/win/tzip/), and extracts .alz
files.  Unalz supports alz, bzip2, and raw formats, multiple volume
archives (alz, a00, a01, ...), large files (over 2GB).  Currently, it
does not support password-protected archives and CRC checking.