clipping: update to YAC version 1.0.3

ChangeLog

src/clipping/area.c

src/clipping/area.h

src/clipping/clipping.c

src/clipping/clipping.h

src/clipping/dep_list.h

src/clipping/ensure_array_size.c

src/clipping/ensure_array_size.h

src/clipping/geometry.h

src/clipping/grid.h

src/clipping/grid_cell.c

src/clipping/grid_cell.h

src/clipping/intersection.c

src/clipping/points.h

src/clipping/utils.c

src/clipping/utils.h

src/remap_conserv.c