re #13613 rb4516 Tunables needs volatile keyword

*** 20,29 ****
--- 20,32 ----
   */
  /*
   * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
+ /*
+  * Copyright 2013 Nexenta Systems, Inc.  All rights reserved.
+  */
  
  /*
   * The sole purpose of this file is to document our violations of the DDI
   * in Solaris and to get ddict to run on the data services stack.
   * Definitions and declarations contained in this file are never compiled
*** 153,163 ****
  #define UL_GETFSIZE     0
  #define USHRT_MAX       0
  
  typedef u_longlong_t    rlim64_t;
  int ulimit() { }
! int maxphys;
  
  #define AT_SIZE 0
  #define VBLK    0
  #define VCHR    0
  #define VREG    0
--- 156,166 ----
  #define UL_GETFSIZE     0
  #define USHRT_MAX       0
  
  typedef u_longlong_t    rlim64_t;
  int ulimit() { }
! volatile int maxphys;
  
  #define AT_SIZE 0
  #define VBLK    0
  #define VCHR    0
  #define VREG    0