Add the blowfish encryption patch from Mohsin Ahmed.  Needs more work.
diff --git a/src/testdir/test71.ok b/src/testdir/test71.ok
new file mode 100644
index 0000000..5820892
--- /dev/null
+++ b/src/testdir/test71.ok
@@ -0,0 +1,6 @@
+01234567890123456789012345678901234567
+line 2  foo bar blah
+line 3 xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+201234567890123456789012345678901234567
+2line 2  foo bar blah
+2line 3 xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx