Updated licensing code for Vista compatability.
Enh: PageCount property now exposed from PrintPreviewDialog.
Fix: Reset internal page count on each display of PrintPreviewDialog.
Fix: Includes TMGDevelopment.Shared.dll 1.0.0.4 fix: accounting for PrintChainManager.Gap value in remaining space on page.
Fix: Includes TMGDevelopment.Shared.dll 1.0.0.4 fix: first PrintChainManager.DocumentChanged event no longer raised from PrintChainManager.OnBeginPrint, happens during PrintChainManager.OnPrintPage only now.
