5875 psignal and psiginfo should not be exposed in environments prior to POSIX 2008

*** 9,18 ****
--- 9,19 ----
  # http://www.illumos.org/license/CDDL.
  #
  
  #
  # Copyright 2015 Garrett D'Amore <garrett@damore.org>
+ # Copyright 2015 Circonus, Inc.  All rights reserved.
  #
  
  #
  # Definitions found in signal.h
  #
*** 19,32 ****
--- 20,43 ----
  
  #
  # Types.
  #
  type | ucontext_t | signal.h | -ALL SUS+
+ type | siginfo_t  | signal.h | -ALL POSIX-1993+ SUS+
  
  #
  # Values.
  #
  value | SIG_DFL | void (*)(int) | signal.h | ALL
  
  #
  # Functions.
  #
+ func | psiginfo                        |\
+        void                            |\
+        const siginfo_t *; const char * |\
+        siginfo.h                       | -ALL SUSv4+
+ 
+ func | psignal                         |\
+        void                            |\
+        int; const char *               |\
+        siginfo.h                       | -ALL SUSv4+