Log Message:
Update from version 0.5200 to version 0.5400 (upstream 0.54)

Upstream changes:
0.54 August 25 2009

    ! Fix for height/width of hidden rows/columns with additional.
      tests in 05_regression.t. Thanks to Greger Leijonhufvud.
      http://rt.cpan.org/Public/Bug/Display.html?id=48450

    ! Fix for mal-formed Print_Title Name block.
      Reported by Marc Elser.

0.53 August 24 2009

    + Made perl 5.8.0 a requirement for proper Unicode handling.

    ! Fixed minor int2col() bug thanks to David Black.
      Added 28_int2col.t test for above.
      http://rt.cpan.org/Public/Bug/Display.html?id=48967

    + Refactored Workbook API and docs.