Log Message:
Update di to 4.47.3. From Brad Lanam in PR pkg/54666.

4.47.3                                  [2019-12-23]
    Fixed missing link flags for clang.

4.47.2                                  [2019-10-30]
    Minor makefile cleanup.

4.47.1                                  [2019-6-25]
    Update mkconfig to version 2.1.1 (fixes build on 32-bit).
    Add configs/config.ms.cl (visual studio definitions).