Add the blowfish encryption patch from Mohsin Ahmed. Needs more work.
diff --git a/src/proto/misc2.pro b/src/proto/misc2.pro
index 5c4cc42..9b27b7e 100644
--- a/src/proto/misc2.pro
+++ b/src/proto/misc2.pro
@@ -81,8 +81,9 @@
int get_shape_idx __ARGS((int mouse));
void update_mouseshape __ARGS((int shape_idx));
int decrypt_byte __ARGS((void));
-int update_keys __ARGS((int c));
+void update_keys __ARGS((int c));
void crypt_init_keys __ARGS((char_u *passwd));
+void free_crypt_key __ARGS((char_u *key));
char_u *get_crypt_key __ARGS((int store, int twice));
void *vim_findfile_init __ARGS((char_u *path, char_u *filename, char_u *stopdirs, int level, int free_visited, int find_what, void *search_ctx_arg, int tagfile, char_u *rel_fname));
char_u *vim_findfile_stopdir __ARGS((char_u *buf));