This change expands the number of properties supported by autoformats,
mainly for Writer.  Some improvements affect Calc as well (e.g. border
styles are now preserved for Calc).

Common: boxitem.hxx, frmitems.cxx
* Added a new version for SvxBoxItem serialization that includes border styles.
* Updated SvxBoxItem and SvxBorderLine serialization logic accordingly.

Writer: fmtornt.hxx, attrfrm.cxx
* Added serialization/deserialization logic for SwFmtVertOrient.

Writer: tblafmt.hxx, tblafmt.cxx, ndtbl.cxx
* Updated file version for autotbl.fmt to be SOFFICE_FILEFORMAT_50.
* Autoformats now record the text orientation and vertical alignment
  of table cells.
* Autoformats now record the following table-level properties:
    - Break
    - Keep with next paragraph
    - Repeat heading
    - Allow table split across pages
    - Allow rows to break across pages
    - Merge adjacent line styles
    - Table shadow

Calc: autoform.hxx, autoform.cxx
* Added support for reading/writing writer-specific data as binary blobs.
* Updated file version for autotbl.fmt to be SOFFICE_FILEFORMAT_50.