rust: Make NodePrefix allocation-free and Copy, remove NodePrefixRef
The `*Ref` struct only existed to avoid allocating `Vec`s
when cloning `NodePrefix`, but we can avoid having `Vec`
in the first place by using an inline array instead.
This makes `NodePrefix` 21 bytes (with 1 for the length)
which is smaller than before as `Vec` alone is 24 bytes.
Differential Revision: https://phab.mercurial-scm.org/D9863
/*
revlog.h - efficient revlog parsing
This software may be used and distributed according to the terms of
the GNU General Public License, incorporated herein by reference.
*/
#ifndef _HG_REVLOG_H_
#define _HG_REVLOG_H_
#include <Python.h>
extern PyTypeObject HgRevlogIndex_Type;
#define HgRevlogIndex_Check(op) PyObject_TypeCheck(op, &HgRevlogIndex_Type)
#endif /* _HG_REVLOG_H_ */