Don't run parsimony tests if the dir is missing.

Don't run expected error tests at all.

tests/dotest

@@ -1,9 +1,11 @@
 #!/bin/sh
 
+make -C ../src
+
 if test $# -gt 0; then
     run="$@"
 else
-    run="./ccmeta"
+    run="../src/ccmeta"
 fi
 
 die()
@@ -12,28 +14,41 @@ die()
     exit 1
 }
 
-for i in tests-std/*.c; do
+if test -d parsimony; then
+    for i in parsimony/*.c; do
+	echo $i
+	j="${i%.c}"
+	k="parsimony/tmp.out"
+	$run $i > $k
+	cmp $k $j || die $k $j
+    done
+    rm parsimony/tmp.out
+fi
+
+for i in std/*.c; do
     echo $i
     j="${i%.c}.out"
     $run < $i > $j
     cmp $i $j || die $i $j
 done
 
-for i in tests-gnu/*.c; do
+for i in gnu/*.c; do
     echo $i
     j="${i%.c}.out"
     $run < $i > $j
     cmp $i $j || die $i $j
 done
 
-for i in tests-err/*.c; do
-    echo $i
-    j="${i%.c}.out"
-    $run < $i > $j
-    cmp -s $i $j || echo failed
-done
+if false; then
+    for i in err/*.c; do
+	echo $i
+	j="${i%.c}.out"
+	$run < $i > $j
+	cmp -s $i $j || echo failed
+    done
+fi
 
-for i in tests-c/*.c; do
+for i in c/*.c; do
     echo $i
     j="${i%.c}.out"
     $run < $i > $j