vcl: Implement copyArea in OpenGL backend
vcl: Implement copyArea in OpenGL backend

Change-Id: If98a2f39a7f3c3079abe7f5e293d7761db0ed8f9

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