Creating new .gpml file with polyline features

tests-dir/unittest/GPlates_log.txt

@@ -0,0 +1,35 @@
+Log file created on Wed Dec 4 15:29:05 2024 by GPlates 2.3.0
+[Debug] On this system GPlates supports the following OpenGL extensions...
+[Debug]   GL_ARB_viewport_array
+[Debug]   GL_EXT_framebuffer_object
+[Debug]   GL_ARB_draw_buffers
+[Debug]   GL_EXT_packed_depth_stencil
+[Debug]   GL_EXT_blend_equation_separate
+[Debug]   GL_EXT_blend_func_separate
+[Debug]   GL_EXT_blend_minmax
+[Debug]   GL_ARB_shader_objects
+[Debug]   GL_ARB_vertex_shader
+[Debug]   GL_ARB_fragment_shader
+[Debug]   GL_EXT_geometry_shader4
+[Debug]   GL_EXT_gpu_shader4
+[Debug]   GL_ARB_gpu_shader_fp64
+[Debug]   GL_ARB_vertex_attrib_64bit
+[Debug]   GL_ARB_texture_cube_map
+[Debug]   GL_ARB_texture_non_power_of_two
+[Debug]   GL_ARB_multitexture
+[Debug]   GL_EXT_texture_edge_clamp
+[Debug]   GL_SGIS_texture_edge_clamp
+[Debug]   GL_EXT_texture_filter_anisotropic
+[Debug]   GL_ARB_texture_env_combine
+[Debug]   GL_ARB_texture_env_dot3
+[Debug]   GL_EXT_texture3D
+[Debug]   GL_EXT_texture_array
+[Debug]   GL_ARB_texture_float
+[Debug]   GL_ARB_texture_rg
+[Debug]   GL_ARB_color_buffer_float
+[Debug]   GL_EXT_draw_range_elements
+[Debug]   GL_ARB_vertex_buffer_object
+[Debug]   GL_ARB_pixel_buffer_object
+[Debug]   GL_ARB_map_buffer_range
+[Debug] ...end of OpenGL extension list.
+[Warning] libpng warning: iCCP: known incorrect sRGB profile