bug#8756: vc-git.el doesn't use --follow argument in vc-git-print-log

[Dmitry Gutov]

On 03.11.2019 16:32, Lars Ingebrigtsen wrote:
> A new option vc-git-print-log-follow was added in 2016, so I think this
> is covered now, and I'm closing this bug report.

The resulting solution still has the problems described in this bug 
report here, 8 years ago:

https://debbugs.gnu.org/cgi/bugreport.cgi?bug=8756#11

(In short, inspecting revisions where the file had a different name 
leads to bad results).