Add the blowfish encryption patch from Mohsin Ahmed.  Needs more work.
diff --git a/src/proto/blowfish.pro b/src/proto/blowfish.pro
new file mode 100644
index 0000000..6b66287
--- /dev/null
+++ b/src/proto/blowfish.pro
@@ -0,0 +1,7 @@
+/* blowfish.c */
+void bf_key_init __ARGS((char_u *password));
+void bf_ofb_init __ARGS((char_u *iv, int iv_len));
+void bf_ofb_update __ARGS((int c));
+int bf_ranbyte __ARGS((void));
+int blowfish_self_test __ARGS((void));
+/* vim: set ft=c : */