Currently, those are used within an extension function used by the
Word 2003 ML XSLT filters

* forms.OGridControlModel::com::sun::star::form::component::GridControl
* forms.OGridControlModel::com::sun::star::beans::XMultiPropertySet
* forms.OGridControlModel::com::sun::star::beans::XPropertySet
* forms.OGridControlModel::com::sun::star::beans::XFastPropertySet

 - chart2/qa/unoapi
 - configmgr/qa/unoapi
 - dbaccess/qa/unoapi
 - forms/qa/complex/forms
 - linguistic/qa/unoapi
 - qadevOOo/qa/unoapi
 - sd/qa/unoapi
 - starmath/qa/unoapi
 - ucb/qa/complex/ucb
 - ucb/qa/unoapi
 - unotools/qa/complex/tempfile

Virtual operator=() is IMO pointless, and especially in a class hierarchy
like SdrObject it's pretty unlikely one could reasonably assign any
SdrObject-based object to any other one. Moreover, it was actually
only used in Clone(), which was almost never reimplemented, so the
more sensible choice is to have non-virtual operator= and virtual
Clone() always being reimplemented and using that.

This commit also fixes various smaller or bigger, er, interesting
details in the various operator= implementations.

Conflicts:
	package/source/zippackage/ZipPackageFolder.cxx

Conflicts:
	automation/source/communi/communi.cxx
	automation/source/server/recorder.cxx
	automation/source/server/server.cxx
	basctl/source/basicide/basobj2.cxx

References:
  http://www.spinellis.gr/blog/20090625/ (Greek Numerals in OpenOffice.org)

  http://user.services.openoffice.org/en/forum/viewtopic.php?f=7&t=7269
  ([Issue+Workaround] Custom Numbering in Bullets and Numbering)

  http://www.opengr.net/forum/viewtopic.php?f=13&t=51

And the references transitively mentioned in the above.

This functionality was implemented during Greek Coding Camp 2009.

NOTE: the present implementation uses the (modern) two-letter version of '6'
(sigma taf) instead of the ancient greek / katharevousa version that uses
the 'stigma' character.

OTOH, we do use the katharevousa 'qoppa' and 'sampi' because there is no
standard modern version that replaces them. If you have that many bullets
so that these symbols are needed, then you had it comin' anyway :p

Author: Pantelis Koukousoulas <pktoss@gmail.com>
License: LGPLv3 / MPL
Signed-off-by: Pantelis Koukousoulas <pktoss@gmail.com>