Undo all the work on determinism in the driver. New plan soon.

luprex/core/cpp/util.hpp

@@ -125,8 +125,10 @@ LuaSourcePtr make_lua_source(const std::string &code);
 // Return true if the line of code is a lua comment.
 bool is_lua_comment(const std::string &line);
 
-// This has to go away.
-LuaSourcePtr read_lua_source(const std::string &dir);
+// Malloc some blocks of RAM, and calculate a hash from
+// their addresses.  This can be used to determine if the malloc
+// heap is in a deterministic state.
+int hash_of_mallocs();
 
 // Remove nullptrs from a vector of unique pointers.
 template<class T>