Yet more refactors in basebuffer.

Source/Integration/StringDecoder.h

@@ -8,7 +8,7 @@ private:
 	bool err_eof_on_read_;
 	bool err_string_too_long_;
 	bool err_integer_truncated_;
-protected:
+public:
     using string_type = std::string;
     void *basebuffer_malloc(size_t size) { return malloc(size); }
     void basebuffer_free(void *p) { free(p); }