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
diff --git a/testsuite/pwd/pwd-prints-working-directory b/testsuite/pwd/pwd-prints-working-directory
index 7bea107..8575347 100644
--- a/testsuite/pwd/pwd-prints-working-directory
+++ b/testsuite/pwd/pwd-prints-working-directory
@@ -1 +1 @@
-test `pwd` = `busybox pwd`
+test $(pwd) = $(busybox pwd)