Ported commits from castor/master:

1d92302d5304266ee14a86b8d9fcbd671b567e5c
  Fix for drive::xx::clearCompressionStats
    - For DriveT10000, DriveMHVTL: stateful accumulator
    - For DriveIBM3592, DriveLTO: log select on specific log page

e6780a8f0a5ed6366ae750eaecc189ac7d0d07fe
  Fix overflowing mountTotal{Read,Write}BytesProcessed by bumping up
  to 64-bit container

12c31edf5193dae90ef65eaa6c3d0eb81a7c6927
  Refactor fix for drive::xx::clearCompressionStats

f626a773aae60b36146d3170e4eb2ef5fd13db35
  Merge branch 'fix_clear_compression_stats' into 'master'
  Fix clear compression stats

  ## Description
    The aim of this merge request is to fix the
    `drive::clearCompressionStats()` method which deleted all log metrics
    with log select on page 0x00 (aka reset all metrics).
    The following changes are introduced:
      * For **IBM and LTO drives**: We are selectively clearing only the
      * compression statistics (pages 0x38, 0x32 equivalently)
      * For **Oracle and MHVTL drives**: Wa are making compression
      * statistics stateful, by accumulating values and subtracting on
      * each flush
    Moreover, we are piggybacking a fix for overflowing
    mountTotal{Read,Write}BytesProcessed
    (drive::xx::getTape{Read,Write}Errors) by bumping up the container map
    in 64-bit value

  ## Testing
    The results of the changes were tested against IBM and Oracle
    drives.
    More specifically, we attempted to write 40 randomly generated files
    of 2GB in size with the previous CASTOR version (2.1.16-9), extracted
    the compression metrics and compared

  ### IBM
    **before:**
      ```
      Oct  6 12:23:09 tpsrv240 tapeserverd[14257]: LVL="Info" TID="14268"
      MSG="Reported to the client that a batch of file was written on tape"
      thread="ReportPacker" clientHost="tps
      Oct  6 12:24:53 tpsrv240 tapeserverd[14257]: LVL="Info" TID="14268"
      MSG="Reported to the client that a batch of file was written on tape"
      thread="ReportPacker" clientHost="tps
      Oct  6 12:25:45 tpsrv240 tapeserverd[14257]: LVL="Info" TID="14268"
      MSG="Reported to the client that a batch of file was written on tape"
      thread="ReportPacker" clientHost="tps
      ```
    **after: **
      ```
      Oct  6 12:34:28 tpsrv240 tapeserverd[14836]: LVL="Info" TID="14847"
      MSG="Reported to the client that a batch of file was written on tape"
      thread="ReportPacker" clientHost="tps
      Oct  6 12:36:12 tpsrv240 tapeserverd[14836]: LVL="Info" TID="14847"
      MSG="Reported to the client that a batch of file was written on tape"
      thread="ReportPacker" clientHost="tps
      Oct  6 12:37:04 tpsrv240 tapeserverd[14836]: LVL="Info" TID="14847"
      MSG="Reported to the client that a batch of file was written on tape"
      thread="ReportPacker" clientHost="tps
      ```

  ### Oracle
    **before:**
      ```
      Oct  6 12:21:44 tpsrv614 tapeserverd[3062]: LVL="Info" TID="3073"
      MSG="Reported to the client that a batch of file was written on tape"
      thread="ReportPacker" clientHost="tpsrv
      Oct  6 12:24:02 tpsrv614 tapeserverd[3062]: LVL="Info" TID="3073"
      MSG="Reported to the client that a batch of file was written on tape"
      thread="ReportPacker" clientHost="tpsrv
      Oct  6 12:25:12 tpsrv614 tapeserverd[3062]: LVL="Info" TID="3073"
      MSG="Reported to the client that a batch of file was written on tape"
      thread="ReportPacker" clientHost="tpsrv
      ```
    **after:**
      ```
      Oct  6 12:34:58 tpsrv614 tapeserverd[3691]: LVL="Info" TID="3702"
      MSG="Reported to the client that a batch of file was written on tape"
      thread="ReportPacker" clientHost="tpsrv
      Oct  6 12:37:16 tpsrv614 tapeserverd[3691]: LVL="Info" TID="3702"
      MSG="Reported to the client that a batch of file was written on tape"
      thread="ReportPacker" clientHost="tpsrv
      Oct  6 12:38:26 tpsrv614 tapeserverd[3691]: LVL="Info" TID="3702"
      MSG="Reported to the client that a batch of file was written on tape"
      thread="ReportPacker" clientHost="tpsrv
      ```
See merge request !11