3772 consider raising default descriptor soft limit

*** 101,111 ****
--- 101,113 ----
  extern int      svc_ndoorfds;
  extern SVCXPRT_LIST *_svc_xprtlist;
  extern mutex_t xprtlist_lock;
  extern void __svc_rm_from_xlist();
  
+ #if !defined(_LP64)
  extern fd_set _new_svc_fdset;
+ #endif
  
  /*
   * If the allocated array of reactor is too small, this value is used as a
   * margin. This reduces the number of allocations.
   */