* Move NumberFormat to thread-local variable
The NumberFormat class isn't thread safe, and sharing one instance
across threads allowed for races which resulted in otherwise valid OSM
tags not being parsed correctly.
* Add supression for ThreadLocal use
* Use ThreadLocal for NumberFormat objects in `Format`
* Wrap `NumberFormat` instances rather than hashmap
* Add --nodemap-type=array option for 2-3x faster osm pass 1 imports
* Add --nodemap-storage=direct option to experiment with direct (off-heap) memory usage
* Extract ResourceUsage and OsmPhaser utilities