Also make sure Grantlee still compiles with Qt 5.13 by cherry picking a commit
that was added after the v5.1.0 release.
In order to identify this commit as comming from the build automation we
temporarily override the user name and email address. As a side effect this
also makes this work on Travis.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>