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/100-args/.gitignore

@@ -0,0 +1 @@
+passfail

t/100-args/all.do

@@ -0,0 +1 @@
+redo test.args test2.args passfailtest

t/100-args/clean.do

@@ -0,0 +1 @@
+rm -f passfail *~ .*~

t/100-args/default.args.do

@@ -0,0 +1,3 @@
+[ "$1" = "test.args" ]
+[ "$2" = "test" ]
+[ "$3" != "test.args" ]

t/100-args/passfail.do

@@ -0,0 +1,6 @@
+echo $$
+if [ -e pleasefail ]; then
+	exit 1
+else
+	exit 0
+fi

t/100-args/passfailtest.do

@@ -0,0 +1,15 @@
+. ../skip-if-minimal-do.sh
+
+rm -f pleasefail
+redo passfail
+[ -e passfail ] || exit 42
+PF1=$(cat passfail)
+touch pleasefail
+redo passfail 2>/dev/null && exit 43
+[ -e passfail ] || exit 44
+PF2=$(cat passfail)
+[ "$PF1" = "$PF2" ] || exit 45
+rm -f pleasefail
+redo passfail || exit 46
+PF3=$(cat passfail)
+[ "$PF1" != "$PF3" ] || exit 47

t/100-args/test2.args.do

@@ -0,0 +1,3 @@
+[ "$1" = "test2.args" ]
+[ "$2" = "test2.args" ]
+[ "$3" != "test2.args" ]