Graphics size values lost when 1.2.0 doc opened by 1.3.0cvs.

[R. Lahaye]

Hi,

It appears the 1.3.0cvs has introduced a size_kind and lyxsize_kind
for graphics in the lyx file. This was not there for 1.2.0.

As a result, graphics sizes get lost when reading a 1.2.0 document
by 1.3.0cvs. Has that been noticed?

Rob.