Update the PrintDialog initialization to set UseEXDialog property.
Update the PrintDialog initialization to set UseEXDialog property.

Fixes an issue with .NET 2.0 runtime and the PrintDialog on x64 runtime.
Use the UseExtendedPrintDialog to disable this property.

discomurray/ZedGraph,DHMechatronicAG/ZedGraph,faint32/ZedGraph,ZedGraph/ZedGraph