[base] Buffer: added ostream operator<< for Buffer & BufferRef
[base] Buffer: added ostream operator<< for Buffer & BufferRef

xzero/x0,christianparpart/x0,christianparpart/x0,christianparpart/x0,christianparpart/x0,xzero/x0,xzero/x0,xzero/x0,xzero/x0,christianparpart/x0,christianparpart/x0,xzero/x0,christianparpart/x0