added TskFsInfo, added more typemaps

    - added build steps for TskFsInfo
    - added TskFsInfo to Main.xs
    - removed new from Tsk::Fs::Info Perl module in order to not clash
      with the XSUB new from TskFsInfo.xs
    - added Tsk-Fs-Info.t , Tsk-Vs-Info.t test files