git: openjdk/skara: Fix some issues building on Windows

[duke]

Changeset: b4b37e88
Author:    Christian Stein <cstein at openjdk.org>
Committer: Erik Helin <ehelin at openjdk.org>
Date:      2019-08-22 13:09:58 +0000
URL:       https://git.openjdk.java.net/skara/commit/b4b37e88

Fix some issues building on Windows

Reviewed-by: ehelin

! bot/src/test/java/org/openjdk/skara/bot/BotRunnerConfigurationTests.java
! build.gradle
! process/src/test/java/org/openjdk/skara/process/ProcessTests.java