Remove uage of static variable from file locks.

[ -z "$COLUMNS" ] && COLUMNS=80

E=`$EXPR $COLUMNS - 8`

#DASH72=`$EXPR substr '------------------------------------------------------------------------' 1 $E`

DASH72=`$ECHO '------------------------------------------------------------------------'|$CUT -c 1-$E`

# on source dist, we pick up freshly build executables

#include <thr_alarm.h>

#include <errno.h>

#ifdef HAVE_FCNTL

static struct flock lock;		/* Must be static for sun-sparc */

#endif

	/* Lock a part of a file */

int my_lock(File fd,int locktype,my_off_t start,my_off_t length,myf MyFlags)

  thr_alarm_t alarmed;

  ALARM	alarm_buff;

  uint wait_for_alarm;

  struct flock m_lock;

  DBUG_ENTER("my_lock");

  DBUG_PRINT("my",("Fd: %d  Op: %d  start: %ld  Length: %ld  MyFlags: %d",

		   fd,locktype,(ulong) start,(ulong) length,MyFlags));

  if (my_disable_locking)

    DBUG_RETURN(0); /* purecov: inspected */

  lock.l_type=(short) locktype;

  lock.l_whence=0L;

  lock.l_start=(long) start;

  lock.l_len=(long) length;

  m_lock.l_type=(short) locktype;

  m_lock.l_whence=0L;

  m_lock.l_start=(long) start;

  m_lock.l_len=(long) length;

  wait_for_alarm=(MyFlags & MY_DONT_WAIT ? MY_HOW_OFTEN_TO_ALARM :

		  (uint) 12*60*60);

  if (fcntl(fd,F_SETLK,&lock) != -1)	/* Check if we can lock */

  if (fcntl(fd,F_SETLK,&m_lock) != -1)	/* Check if we can lock */

    DBUG_RETURN(0);			/* Ok, file locked */

  DBUG_PRINT("info",("Was locked, trying with alarm"));

  if (!thr_alarm(&alarmed,wait_for_alarm,&alarm_buff))

  {

    int value;

    while ((value=fcntl(fd,F_SETLKW,&lock)) && !thr_got_alarm(&alarmed) &&

    while ((value=fcntl(fd,F_SETLKW,&m_lock)) && !thr_got_alarm(&alarmed) &&

	   errno == EINTR) ;

    thr_end_alarm(&alarmed);

    if (value != -1)