bulk copy of latest physfs to our misc/libphysfs since this seems to fix an off-by-1 error reliably hit in readln read of 1 byte probably introduced in the addition of the buffered read. Whether this is excessive or whether libphysfs should even be maintained by us is another matter. But at least we shouldn't crash
/* Threads.h */
#ifndef __7Z_THRESDS_H
#define __7Z_THRESDS_H
#include <windows.h>
#include "Types.h"
typedef struct _CThread
{
HANDLE handle;
} CThread;
#define Thread_Construct(thread) (thread)->handle = NULL
#define Thread_WasCreated(thread) ((thread)->handle != NULL)
typedef unsigned THREAD_FUNC_RET_TYPE;
#define THREAD_FUNC_CALL_TYPE StdCall
#define THREAD_FUNC_DECL THREAD_FUNC_RET_TYPE THREAD_FUNC_CALL_TYPE
HRes Thread_Create(CThread *thread, THREAD_FUNC_RET_TYPE (THREAD_FUNC_CALL_TYPE *startAddress)(void *), LPVOID parameter);
HRes Thread_Wait(CThread *thread);
HRes Thread_Close(CThread *thread);
typedef struct _CEvent
{
HANDLE handle;
} CEvent;
typedef CEvent CAutoResetEvent;
typedef CEvent CManualResetEvent;
#define Event_Construct(event) (event)->handle = NULL
#define Event_IsCreated(event) ((event)->handle != NULL)
HRes ManualResetEvent_Create(CManualResetEvent *event, int initialSignaled);
HRes ManualResetEvent_CreateNotSignaled(CManualResetEvent *event);
HRes AutoResetEvent_Create(CAutoResetEvent *event, int initialSignaled);
HRes AutoResetEvent_CreateNotSignaled(CAutoResetEvent *event);
HRes Event_Set(CEvent *event);
HRes Event_Reset(CEvent *event);
HRes Event_Wait(CEvent *event);
HRes Event_Close(CEvent *event);
typedef struct _CSemaphore
{
HANDLE handle;
} CSemaphore;
#define Semaphore_Construct(p) (p)->handle = NULL
HRes Semaphore_Create(CSemaphore *p, UInt32 initiallyCount, UInt32 maxCount);
HRes Semaphore_ReleaseN(CSemaphore *p, UInt32 num);
HRes Semaphore_Release1(CSemaphore *p);
HRes Semaphore_Wait(CSemaphore *p);
HRes Semaphore_Close(CSemaphore *p);
typedef CRITICAL_SECTION CCriticalSection;
HRes CriticalSection_Init(CCriticalSection *p);
#define CriticalSection_Delete(p) DeleteCriticalSection(p)
#define CriticalSection_Enter(p) EnterCriticalSection(p)
#define CriticalSection_Leave(p) LeaveCriticalSection(p)
#endif