Add small script to generate bounding-box argument from bbox files.

inputs/bbox/bbox4osmosis.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+bbox=$1
+
+if [ -z "${bbox}" ]; then
+    echo "Usage: $0 [BBOX_FILE|BBOX_NAME]" > /dev/stderr
+    exit 1
+fi
+
+if [ ! -e "${bbox}" ]; then
+    bbox=inputs/bbox/${bbox}.bbox
+fi
+
+if [ ! -e "${bbox}" ] || [ ! -r "${bbox}" ]; then
+    echo "File ${bbox} does not exist or is not readable." > /dev/stderr
+fi
+
+cat ${bbox} | tr "," " " | xargs printf "bottom=%f left=%f top=%f right=%f"