Add the blowfish encryption patch from Mohsin Ahmed. Needs more work.

src/globals.h

@@ -105,6 +105,10 @@ EXTERN int	exec_from_reg INIT(= FALSE);	/* executing register */
 
 EXTERN int	screen_cleared INIT(= FALSE);	/* screen has been cleared */
 
+#ifdef FEAT_CRYPT
+EXTERN int      use_crypt_method INIT(= 0);
+#endif
+
 /*
  * When '$' is included in 'cpoptions' option set:
  * When a change command is given that deletes only part of a line, a dollar