fix building with glibc-2.16+

lss/linux_syscall_support.h

 /* Copyright (c) 2005-2011, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 222 matching lines @@
   long               ru_nswap;
   long               ru_inblock;
   long               ru_oublock;
   long               ru_msgsnd;
   long               ru_msgrcv;
   long               ru_nsignals;
   long               ru_nvcsw;
   long               ru_nivcsw;
 };
 
-struct siginfo;
 #if defined(__i386__) || defined(__ARM_EABI__) || defined(__ARM_ARCH_3__) \
   || defined(__PPC__)
 
 /* include/asm-{arm,i386,mips,ppc}/signal.h                                  */
 struct kernel_old_sigaction {
   union {
     void             (*sa_handler_)(int);
-    void             (*sa_sigaction_)(int, struct siginfo *, void *);
+    void             (*sa_sigaction_)(int, siginfo_t *, void *);
   };
   unsigned long      sa_mask;
   unsigned long      sa_flags;
   void               (*sa_restorer)(void);
 } __attribute__((packed,aligned(4)));
 #elif (defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI32)
   #define kernel_old_sigaction kernel_sigaction
 #endif
 
 /* Some kernel functions (e.g. sigaction() in 2.6.23) require that the
@@ skipping 16 matching lines @@
   unsigned long sig[(KERNEL_NSIG + 8*sizeof(unsigned long) - 1)/
                     (8*sizeof(unsigned long))];
 };
 
 /* include/asm-{arm,i386,mips,x86_64,ppc}/signal.h                           */
 struct kernel_sigaction {
 #ifdef __mips__
   unsigned long      sa_flags;
   union {
     void             (*sa_handler_)(int);
-    void             (*sa_sigaction_)(int, struct siginfo *, void *);
+    void             (*sa_sigaction_)(int, siginfo_t *, void *);
   };
   struct kernel_sigset_t sa_mask;
 #else
   union {
     void             (*sa_handler_)(int);
-    void             (*sa_sigaction_)(int, struct siginfo *, void *);
+    void             (*sa_sigaction_)(int, siginfo_t *, void *);
   };
   unsigned long      sa_flags;
   void               (*sa_restorer)(void);
   struct kernel_sigset_t sa_mask;
 #endif
 };
 
 /* include/linux/socket.h                                                    */
 struct kernel_sockaddr {
   unsigned short     sa_family;
@@ skipping 3233 matching lines @@
 # pragma pop_macro("fstat64")
 # pragma pop_macro("lstat64")
 #endif
 
 #if defined(__cplusplus) && !defined(SYS_CPLUSPLUS)
 }
 #endif
 
 #endif
 #endif