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configure became a regular file.

install-sh became a regular file.

Changes to src/test_superlock.c.

   147    147   ** Release a superlock held on a database file. The argument passed to 
   148    148   ** this function must have been obtained from a successful call to
   149    149   ** sqlite3demo_superlock().
   150    150   */
   151    151   void sqlite3demo_superunlock(void *pLock){
   152    152     Superlock *p = (Superlock *)pLock;
   153    153     if( p->bWal ){
          154  +    int rc;                         /* Return code */
   154    155       int flags = SQLITE_SHM_UNLOCK | SQLITE_SHM_EXCLUSIVE;
   155    156       sqlite3_file *fd = 0;
   156         -    sqlite3_file_control(p->db, "main", SQLITE_FCNTL_FILE_POINTER, (void *)&fd);
   157         -    fd->pMethods->xShmLock(fd, 2, SQLITE_SHM_NLOCK-2, flags);
          157  +    rc = sqlite3_file_control(p->db, "main", SQLITE_FCNTL_FILE_POINTER, (void *)&fd);
          158  +    if( rc==SQLITE_OK ){
          159  +      fd->pMethods->xShmLock(fd, 2, 1, flags);
          160  +      fd->pMethods->xShmLock(fd, 3, SQLITE_SHM_NLOCK-3, flags);
          161  +    }
   158    162     }
   159    163     sqlite3_close(p->db);
   160    164     sqlite3_free(p);
   161    165   }
   162    166   
   163    167   /*
   164    168   ** Obtain a superlock on the database file identified by zPath, using the