updated for version 7.2.336
Problem:    MzScheme interface can't evaluate an expression.
Solution:   Add mzeval(). (Sergey Khorev)
diff --git a/src/proto/if_mzsch.pro b/src/proto/if_mzsch.pro
index 37bfbd8..60e99bd 100644
--- a/src/proto/if_mzsch.pro
+++ b/src/proto/if_mzsch.pro
@@ -15,4 +15,5 @@
 void *mzvim_eval_string __ARGS((char_u *str));
 int mzthreads_allowed __ARGS((void));
 void mzscheme_main __ARGS((void));
+void do_mzeval __ARGS((char_u *str, typval_T *rettv));
 /* vim: set ft=c : */