Revamp test script file tree hierarchy

This new hierarchy makes it easier to work simultaneously on data and
the script, simplifies deployment to tempdir and makes the launching
script naming consistent with simple.sh.

test/include/harness.sh

@@ -15,7 +15,7 @@ tf_has_files() {
 }
 
 tf_enum_tests() {
-    find test/scripts -maxdepth 1 -type f -perm /111 | cut -d/ -f3-
+    find test/tests -mindepth 2 -maxdepth 2 -type f -perm /111 | cut -d/ -f3
 }
 
 tf_run_tests() {
@@ -28,12 +28,10 @@ tf_run_tests() {
     do
         tf_think "... $tname"
         tmpdir=$(mktemp -d)
-        datadir="$TF_PROJDIR/test/data/$tname"
         stamp=$(date +artifacts-$tname-%Y%m%d-%H%M%S)
         pushd $tmpdir >/dev/null
-            cp -r "$TF_PROJDIR/test/scripts/$tname" .
-            tf_has_files "$datadir" && cp -r "$datadir/"* .
-            TF_TNAME="$tname" ./$tname
+            cp -r "$TF_PROJDIR/test/tests/$tname/"* .
+            TF_TNAME="$tname" ./TF_RUN
             tes=$?
             case $tes in
                 0|2)        # ok    | bailout (skipped)