* IO::Compress::Gzip & IO::Uncompress::Gunzip

        - RFC1952 says that the FNAME & FCOMMENT header fields must be ISO
          8859-1 (LATIN-1) characters. The code can optionally police this.
          Added a fix for this logic when running on EBCDIC.

      * Makefile.PL

        - Check if IO::Compress::Bzip2 is already installed. If it is, add
          to the PREREQ_PM list.