shelve: drop unnecessary backup of dirstate for phase-based case
Regular shelve has a hack using an uncommitted transaction that's then
aborted at the end of the operation. It preserves the dirstate across
the abort, however, by saving a backup copy of it. Phase-based shelve
instead commits the transaction, so the hack shouldn't be necessary
there.
Differential Revision: https://phab.mercurial-scm.org/D5389
#ifndef _HG_COMPAT_H_
#define _HG_COMPAT_H_
#ifdef _WIN32
#ifdef _MSC_VER
#if _MSC_VER < 1900
/* msvc 6.0 has problems */
#define inline __inline
#if defined(_WIN64)
typedef __int64 ssize_t;
typedef unsigned __int64 uintptr_t;
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typedef int ssize_t;
typedef unsigned int uintptr_t;
#endif
typedef signed char int8_t;
typedef short int16_t;
typedef long int32_t;
typedef __int64 int64_t;
typedef unsigned char uint8_t;
typedef unsigned short uint16_t;
typedef unsigned long uint32_t;
typedef unsigned __int64 uint64_t;
#else
/* VC++ 14 */
#include <stdint.h>
#if defined(_WIN64)
typedef __int64 ssize_t;
#else
typedef int ssize_t;
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#endif /* _MSC_VER < 1900 */
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/* not msvc */
#include <stdint.h>
#endif
#else
/* not windows */
#include <sys/types.h>
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#include <arpa/inet.h>
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#include <inttypes.h>
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#if defined __hpux || defined __SUNPRO_C || defined _AIX
#define inline
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#ifdef __linux
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