Add -Dfile.encoding=UTF-8 to Jenkins, Ant and Maven
Add -Dfile.encoding=UTF-8 to Jenkins, Ant and Maven

In an attempt to fix the issue described:

https://github.com/scala/scala/pull/4268#issuecomment-71815173

retronym/scala-jenkins-infra,SethTisue/scala-jenkins-infra,SethTisue/scala-jenkins-infra,scala/scala-jenkins-infra,retronym/scala-jenkins-infra,retronym/scala-jenkins-infra,scala/scala-jenkins-infra,adriaanm/scala-jenkins-infra,adriaanm/scala-jenkins-infra,lrytz/scala-jenkins-infra,adriaanm/scala-jenkins-infra,DarkDimius/scala-jenkins-infra,SethTisue/scala-jenkins-infra,DarkDimius/scala-jenkins-infra,lrytz/scala-jenkins-infra,DarkDimius/scala-jenkins-infra,lrytz/scala-jenkins-infra