[Heimdal-source-changes] [heimdal/heimdal] efb27f: Windows: update default timestamping service

[Jeffrey Altman]

  Branch: refs/heads/master
  Home:   https://github.com/heimdal/heimdal
  Commit: efb27f15ac3def3db4ad629d70e8def764adba21
      https://github.com/heimdal/heimdal/commit/efb27f15ac3def3db4ad629d70e8def764adba21
  Author: Jeffrey Altman <jaltman at secure-endpoints.com>
  Date:   2019-11-02 (Sat, 02 Nov 2019)

  Changed paths:
    M windows/NTMakefile.w32
    M windows/README.md

  Log Message:
  -----------
  Windows: update default timestamping service

The Verisign and Symantec timestamping services have been shutdown.
Switch to the Digicert service which replaced the Symantec services
as of 31 Oct 2019.

  http://timestamp.digicert.com

Change-Id: I365e6c3698b8fc99b18e8d1e5a54ce3519f3c5eb