message: Refactor ReadAll() for strings to support linux /proc files
  * These files have no byte sizes so we can't seek to the end and start. We need
  to instead just read them chunk-wise.
diff: @@ -381,17 +381,18 @@ inline bool ReadAll(const rdcstr &filename, rdcstr &str)
  if(f == NULL)
  return false;
  - FileIO::fseek64(f, 0, SEEK_END);
  - uint64_t size = ftell64(f);
  - FileIO::fseek64(f, 0, SEEK_SET);
  + char chunk[513];
  - str.resize((size_t)size);
  -
  - size_t numRead = FileIO::fread(&str[0], 1, str.size(), f);
  + while(!FileIO::feof(f))
  + {
  + memset(chunk, 0, 513);
  + size_t numRead = FileIO::fread(chunk, 1, 512, f);
  + str.append(chunk, numRead);
  + }
  FileIO::fclose(f);
  - return numRead == str.size();
  + return true;
  }
  };
  