ARROW-5709: [C++] Fix gandiva-date_time_test failure on Windows
ARROW-5709: [C++] Fix gandiva-date_time_test failure on Windows

The failure would only manifest on systems with a timezone ahead of UTC
(so probably not on most public CI systems).

Author: Antoine Pitrou <antoine@python.org>

Closes #4678 from pitrou/ARROW-5709-gandiva-date-time-failure and squashes the following commits:

2932706f8 <Antoine Pitrou> ARROW-5709:  Fix gandiva-date_time_test failure on Windows

cpcloud/arrow,apache/arrow,laurentgo/arrow,renesugar/arrow,renesugar/arrow,kou/arrow,laurentgo/arrow,laurentgo/arrow,wesm/arrow,xhochy/arrow,kou/arrow,renesugar/arrow,apache/arrow,laurentgo/arrow,apache/arrow,icexelloss/arrow,apache/arrow,wesm/arrow,icexelloss/arrow,cpcloud/arrow,kou/arrow,icexelloss/arrow,renesugar/arrow,icexelloss/arrow,renesugar/arrow,majetideepak/arrow,xhochy/arrow,wesm/arrow,kou/arrow,renesugar/arrow,wesm/arrow,xhochy/arrow,xhochy/arrow,kou/arrow,cpcloud/arrow,apache/arrow,xhochy/arrow,cpcloud/arrow,wesm/arrow,apache/arrow,laurentgo/arrow,kou/arrow,icexelloss/arrow,majetideepak/arrow,apache/arrow,renesugar/arrow,wesm/arrow,icexelloss/arrow,kou/arrow,apache/arrow,majetideepak/arrow,laurentgo/arrow,apache/arrow,majetideepak/arrow,kou/arrow,xhochy/arrow,renesugar/arrow,majetideepak/arrow,icexelloss/arrow,wesm/arrow,wesm/arrow,renesugar/arrow,majetideepak/arrow,majetideepak/arrow,laurentgo/arrow,xhochy/arrow,majetideepak/arrow,wesm/arrow,cpcloud/arrow,wesm/arrow,cpcloud/arrow,xhochy/arrow,xhochy/arrow,xhochy/arrow,laurentgo/arrow,wesm/arrow,renesugar/arrow,cpcloud/arrow,wesm/arrow,icexelloss/arrow,cpcloud/arrow,icexelloss/arrow,apache/arrow,majetideepak/arrow,majetideepak/arrow,cpcloud/arrow,apache/arrow,cpcloud/arrow,laurentgo/arrow,laurentgo/arrow,cpcloud/arrow,apache/arrow,kou/arrow,majetideepak/arrow,majetideepak/arrow,xhochy/arrow,kou/arrow,icexelloss/arrow,laurentgo/arrow,xhochy/arrow,laurentgo/arrow,apache/arrow,majetideepak/arrow,kou/arrow,majetideepak/arrow,icexelloss/arrow,xhochy/arrow,laurentgo/arrow,xhochy/arrow,renesugar/arrow,apache/arrow,cpcloud/arrow,icexelloss/arrow,icexelloss/arrow,laurentgo/arrow,icexelloss/arrow,cpcloud/arrow,wesm/arrow,wesm/arrow,majetideepak/arrow,renesugar/arrow,kou/arrow,kou/arrow,laurentgo/arrow,renesugar/arrow,kou/arrow,xhochy/arrow,renesugar/arrow,cpcloud/arrow,renesugar/arrow