codereview and testing fixes.
6558 kstat: desire type for timestamps

*** 21,30 ****
--- 21,31 ----
  /*
   * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   *
   * Copyright 2015 Nexenta Systems, Inc.  All rights reserved.
+  * Copyright 2016 Garrett D'Amore
   */
  
  #ifndef _SYS_KSTAT_H
  #define _SYS_KSTAT_H
  
*** 480,489 ****
--- 481,492 ----
                  uint64_t        ui64;
  #endif
                  long            l;
                  ulong_t         ul;
  
+                 hrtime_t        t;
+ 
                  /* These structure members are obsolete */
  
                  longlong_t      ll;
                  u_longlong_t    ull;
                  float           f;
*** 526,535 ****
--- 529,543 ----
   * initialization) to reflect the correct amount of space required for the
   * long strings and the kstat_named_t's.
   */
  #define KSTAT_DATA_STRING       9
  
+ /*
+  * Value is an hrtime_t, in seconds since system boot.
+  */
+ #define KSTAT_DATA_TIME         10
+ 
  /* These types are obsolete */
  
  #define KSTAT_DATA_LONGLONG     KSTAT_DATA_INT64
  #define KSTAT_DATA_ULONGLONG    KSTAT_DATA_UINT64
  #define KSTAT_DATA_FLOAT        5