Kill off the old 'tests' stuff. Write a ton of new tests for the

'testsuite' dir.  Fix a bunch of broken tests.  Fix the testsuite
'runtest' script so it actually reports all failures and provides
meaningful feedback.
 -Erik

testsuite/sed/sed-append-next-line

@@ -1,10 +1,11 @@
-# XFAIL
 # This will fail if CONFIG_FEATURE_SED_GNU_COMPATABILITY is defined
 busybox sed 'N;p'>output <<EOF
 a
 b
 c
 EOF
+
+set +e
 cmp -s output - <<EOF
 a
 b
@@ -12,3 +13,7 @@ a
 b
 c
 EOF
+if [ $? != 0 ] ; then
+	exit 0;
+fi
+exit 1;