using blake2 checksums (pcp1 -C) now

tests/md5

@@ -1,12 +1,5 @@
 #!/bin/sh
 file=$1
-if type md5 > /dev/null 2>&1; then
-    md5 -q $*
-elif type md5sum > /dev/null 2>&1; then
-    md5sum $* | awk '{print $1}'
-elif type openssl > /dev/null 2>&1; then
-    openssl md5 -r $*  | awk '{print $1}'
-else
-    echo "no MD5 tool found!"
-    exit 1
-fi
+../src/pcp1 -C $file | awk '{print $4}'
+
+