Fix Windows build with VS2010: forward declaration not enough
Fix Windows build with VS2010: forward declaration not enough

Change-Id: Ic1b6673dd85caf5f340974cde09c104a5a13b395

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core