Update to libtomcrypt 1.18.1, merged with Dropbear changes

libtomcrypt/coverage_more.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+set -e
+
+./sizes
+./constants
+
+for i in $(for j in $(echo $(./hashsum -h | awk '/Algorithms/,EOF' | tail -n +2)); do echo $j; done | sort); do echo -n "$i: " && ./hashsum -a $i tests/test.key ; done > hashsum_tv.txt
+difftroubles=$(diff -i -w -B hashsum_tv.txt notes/hashsum_tv.txt | grep '^<') || true
+if [ -n "$difftroubles" ]; then
+  echo "FAILURE: hashsum_tv.tx"
+  diff -i -w -B hashsum_tv.txt notes/hashsum_tv.txt
+  echo "hashsum failed"
+  exit 1
+else
+  echo "hashsum okay"
+fi
+
+
+exit 0
+
+# ref:         $Format:%D$
+# git commit:  $Format:%H$
+# commit time: $Format:%ai$