Invoke binaries in $PATH rather than by absolute path.

That security measure costs more than it gives.
So, keep your PATH sane and we can run this script on more than
one system.

src/test/test-network.sh

@@ -2,10 +2,10 @@
 
 # NOTE: Requires Chutney in $CHUTNEY_PATH.
 
-TOR_DIR=$(/bin/pwd)/src/or
+TOR_DIR=$(pwd)/src/or
 NETWORK_FLAVOUR=basic
 CHUTNEY_NETWORK=networks/$NETWORK_FLAVOUR
-myname=$(/usr/bin/basename $0)
+myname=$(basename $0)
 
 [ -d "$CHUTNEY_PATH" ] && [ -x "$CHUTNEY_PATH/chutney" ] || {
     echo "$myname: missing 'chutney' in CHUTNEY_PATH ($CHUTNEY_PATH)"
@@ -20,6 +20,6 @@ PATH=$TOR_DIR:$PATH             # For picking up the right tor binary.
 BOOTSTRAP_TIME=18
 echo -n "$myname: sleeping for $BOOTSTRAP_TIME seconds"
 n=$BOOTSTRAP_TIME; while [ $n -gt 0 ]; do
-    /bin/sleep 1; n=$(/usr/bin/expr $n - 1); echo -n .
+    sleep 1; n=$(expr $n - 1); echo -n .
 done; echo ""
 ./chutney verify $CHUTNEY_NETWORK