* Compress::Zlib
        Get memGunzip & memGzip to set $gzerrno
        [RT# 47283]

      * Compress::Zlib
        Export memGunzip, memGzip and zlib_version on demand
        [RT# 52992]

      * examples/io/anycat
        This sample was using IO::Uncompress::AnyInflate. Much better to
        use IO::Uncompress::AnyUncompress.