Fix -Wshift-negative-value warnings with MAKE_PROCESS_CPUCLOCK.

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 709 matching lines @@
 #define CPUCLOCK_VIRT           1
 #endif
 #ifndef CPUCLOCK_SCHED
 #define CPUCLOCK_SCHED          2
 #endif
 #ifndef CPUCLOCK_PERTHREAD_MASK
 #define CPUCLOCK_PERTHREAD_MASK 4
 #endif
 #ifndef MAKE_PROCESS_CPUCLOCK
 #define MAKE_PROCESS_CPUCLOCK(pid, clock)                                     \
-        ((~(int)(pid) << 3) | (int)(clock))
+        ((int)(~(unsigned)(pid) << 3) | (int)(clock))
 #endif
 #ifndef MAKE_THREAD_CPUCLOCK
 #define MAKE_THREAD_CPUCLOCK(tid, clock)                                      \
-        ((~(int)(tid) << 3) | (int)((clock) | CPUCLOCK_PERTHREAD_MASK))
+        ((int)(~(unsigned)(tid) << 3) |                                       \
+         (int)((clock) | CPUCLOCK_PERTHREAD_MASK))
 #endif
 
 #ifndef FUTEX_WAIT
 #define FUTEX_WAIT                0
 #endif
 #ifndef FUTEX_WAKE
 #define FUTEX_WAKE                1
 #endif
 #ifndef FUTEX_FD
 #define FUTEX_FD                  2
@@ skipping 3747 matching lines @@
 # pragma pop_macro("fstat64")
 # pragma pop_macro("lstat64")
 #endif
 
 #if defined(__cplusplus) && !defined(SYS_CPLUSPLUS)
 }
 #endif
 
 #endif
 #endif