Atempt at making --enable-gtk3 build again
Atempt at making --enable-gtk3 build again

...post e717d1dcce7f8906311c5ccdbb2326b61a702630 "Resolves: #i121237#
Rework/Cleanup of Region code..."  Note that GktSalGraphics variant for GTK 3
(there is two declarations in vcl/inc/unx/gtk/gtkgdi.hxx) inherits m_aClipRegion
from SvpSalGraphics.

Change-Id: Ic264226bc406f67f20d1893455d85ad0d1bc17ed

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