third_party/protobuf: Update to HEAD (83d681ee2c)

third_party/protobuf/src/google/protobuf/stubs/atomicops_internals_power.h

 // Copyright 2014 Bloomberg Finance LP. 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
 // copyright notice, this list of conditions and the following disclaimer
@@ skipping 75 matching lines @@
       "       bne- 1b                         \n\t"
               : [res]  "=&b" (result)
               : [obj]  "b"   (ptr),
                 [val]  "b"   (increment),
                 [zero] "i"   (0)
               : "cr0", "ctr");
 
   return result;
 }
 
-inline void MemoryBarrier(void) {
+inline void MemoryBarrierInternal(void) {
   asm volatile (
       "       lwsync                          \n\t"
       "       isync                           \n\t"
               :
               :
               : "memory");
 }
 
 inline Atomic32 Barrier_AtomicIncrement(volatile Atomic32* ptr,
                                         Atomic32 increment) {
@@ skipping 324 matching lines @@
 
   return result;
 }
 #endif
 
 }  // namespace internal
 }  // namespace protobuf
 }  // namespace google
 
 #endif  // GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_SPARC_GCC_H_