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/xargs/xargs-works

@@ -0,0 +1,3 @@
+find -name \*works -type f | xargs md5sum > logfile.gnu
+find -name \*works -type f | busybox xargs md5sum > logfile.bb
+diff -u logfile.gnu logfile.bb