Find intersection nodes globally rather than individually in each tile

2.33.0

• Further reduce memory usage of --no-simplification-of-shared-nodes by calculating the list of shared nodes globally using temporary files rather than in memory for each individual tile
• Make --no-simplification-of-shared-nodes behave for LineStrings as it does for Polygons, preventing simplification only at crossings, convergences, and divergences, not at every point along collinear segments