t/*: rearrange tests into numbered directories.

It was getting way too ad-hoc in there.  Let's reorganize the tests so that
there's a good, obvious, suggested sequence to run them in.

t/curse/check-2.sh

@@ -1,12 +0,0 @@
-COUNT_IN=$(ls *.count | wc -l)
-COUNT_OUT=$(cat *.count | wc -l)
-if [ "$COUNT_IN" -ne "$COUNT_OUT" ]; then
-	echo "expected $COUNT_IN individual writes, got $COUNT_OUT" >&2
-	exit 42
-fi
-COUNTALL_IN=$(cat in.countall | wc -l)
-COUNTALL_OUT=$(cat out.countall | wc -l)
-if [ "$COUNTALL_IN" -ne "$COUNTALL_OUT" ]; then
-	echo "expected $COUNTALL_IN allwrites, got $COUNTALL_OUT" >&2
-	exit 43
-fi