message: Fix the error looking for libhdfs.so, Mac OS using libhdfs.dylib
diff: @@ -109,6 +109,8 @@ class LibHDFS {
  // in the libhdfs documentation.
  #if defined(PLATFORM_WINDOWS)
  const char* kLibHdfsDso = "hdfs.dll";
  +#elif defined(MACOS) || defined(TARGET_OS_MAC)
  + const char* kLibHdfsDso = "libhdfs.dylib";
  #else
  const char* kLibHdfsDso = "libhdfs.so";
  #endif
  