shapes_polygons/shape_index: maximum direction attribute added
saga_api, CSG_Tool::DataObject_Add(): also force parameters update, so that these are automatically synchronized
saga_gui, CWKSP_Data_Manager/CWKSP_Tool_Manager: check that paths exist (color ramps, docs/tools)
saga_api, CSG_Environment::Get_Share_Path(): macos/appbundle fix
saga_gdi/saga_gui, CSGDI_Dialog_Colors::Set_Presets(): static function added (user defined color ramps folder)
saga_api, CSG_Environment::Get_Share_Path(): macos/appbundle fix
saga-gis/CMakeLists.txt: appleclang fix, refers to [bugs:#338] Linker command fail with Apple Clang
saga_api/map, CSG_Map_Grids::Get_Image(): overload for (CSG_Grid *)