Fix various build failures on Windows (Courtesy of rockerinthelocker)

13 jobs for 223-fix-vcredist-path in 8 minutes and 28 seconds (queued for 4 seconds)
Status Job ID Name Coverage
  Precheck
passed precheck:debian:sid:amd64 #34364
amd64 docker linux

00:00:11

 
  Build
passed build:centos:centos6:amd64 #34365
amd64 docker linux

00:03:02

passed build:centos:centos7:amd64 #34366
amd64 docker linux

00:03:12

passed build:debian:sid:amd64 #34367
amd64 docker linux

00:02:11

passed build:debian:sid:i386 #34368
i386 docker linux

00:02:17

 
  Test
passed systemtest:centos:centos6:amd64 #34373
amd64 docker linux

00:04:39

passed systemtest:centos:centos7:amd64 #34374
amd64 docker linux

00:04:41

passed systemtest:debian:sid:amd64 #34375
amd64 docker linux

00:04:42

passed systemtest:debian:sid:i386 #34376
i386 docker linux

00:05:01

passed unittest:centos:centos6:amd64 #34369
amd64 docker linux

00:01:04

passed unittest:centos:centos7:amd64 #34370
amd64 docker linux

00:01:05

passed unittest:debian:sid:amd64 #34371
amd64 docker linux

00:00:58

passed unittest:debian:sid:i386 #34372
i386 docker linux

00:00:54