Tweak MSVC build system to match changes in 7143b3e82.

Tom Lane <tgl@sss.pgh.pa.us>

Commit: 97c6852ff7c54d5b44426ceae9e3215d13157c10
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date: 2018-09-28T19:17:07Z
Releases: 12.0
Tweak MSVC build system to match changes in 7143b3e82.

Also try to make the comment suggesting that this might be needed
more intelligible.

Per buildfarm.

Files

PathChange+/−
src/interfaces/libpq/Makefile modified +3 −2
src/tools/msvc/Mkvcbuild.pm modified +4 −10