bump PRODUCTVERSION to 3.4 also in solenv/inc/productversion.mk (fdo#36277)
bump PRODUCTVERSION to 3.4 also in solenv/inc/productversion.mk (fdo#36277)

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