Gradle: we target Java starting from 1.6
Gradle: we target Java starting from 1.6

Change-Id: Ifb1292bd6c4115ac052cb00f736492e168da85aa

sandrineBeauche/scheduling,youribonnaffe/scheduling,yinan-liu/scheduling,sgRomaric/scheduling,marcocast/scheduling,marcocast/scheduling,fviale/scheduling,ow2-proactive/scheduling,sandrineBeauche/scheduling,ow2-proactive/scheduling,zeineb/scheduling,tobwiens/scheduling,ShatalovYaroslav/scheduling,sgRomaric/scheduling,youribonnaffe/scheduling,jrochas/scheduling,youribonnaffe/scheduling,laurianed/scheduling,ow2-proactive/scheduling,tobwiens/scheduling,fviale/scheduling,yinan-liu/scheduling,paraita/scheduling,ShatalovYaroslav/scheduling,paraita/scheduling,mbenguig/scheduling,paraita/scheduling,yinan-liu/scheduling,fviale/scheduling,laurianed/scheduling,yinan-liu/scheduling,fviale/scheduling,zeineb/scheduling,yinan-liu/scheduling,jrochas/scheduling,zeineb/scheduling,ow2-proactive/scheduling,ShatalovYaroslav/scheduling,mbenguig/scheduling,lpellegr/scheduling,marcocast/scheduling,mbenguig/scheduling,youribonnaffe/scheduling,lpellegr/scheduling,youribonnaffe/scheduling,sandrineBeauche/scheduling,lpellegr/scheduling,ShatalovYaroslav/scheduling,laurianed/scheduling,laurianed/scheduling,zeineb/scheduling,lpellegr/scheduling,ow2-proactive/scheduling,mbenguig/scheduling,paraita/scheduling,paraita/scheduling,mbenguig/scheduling,youribonnaffe/scheduling,zeineb/scheduling,sandrineBeauche/scheduling,laurianed/scheduling,sgRomaric/scheduling,mbenguig/scheduling,lpellegr/scheduling,paraita/scheduling,laurianed/scheduling,jrochas/scheduling,tobwiens/scheduling,laurianed/scheduling,sgRomaric/scheduling,sandrineBeauche/scheduling,sandrineBeauche/scheduling,tobwiens/scheduling,sgRomaric/scheduling,jrochas/scheduling,tobwiens/scheduling,lpellegr/scheduling,zeineb/scheduling,sgRomaric/scheduling,marcocast/scheduling,marcocast/scheduling,zeineb/scheduling,yinan-liu/scheduling,youribonnaffe/scheduling,ShatalovYaroslav/scheduling,ShatalovYaroslav/scheduling,marcocast/scheduling,sgRomaric/scheduling,sandrineBeauche/scheduling,tobwiens/scheduling,mbenguig/scheduling,ow2-proactive/scheduling,jrochas/scheduling,paraita/scheduling,fviale/scheduling,tobwiens/scheduling,fviale/scheduling,ow2-proactive/scheduling,fviale/scheduling,ShatalovYaroslav/scheduling,yinan-liu/scheduling,marcocast/scheduling,jrochas/scheduling,jrochas/scheduling,lpellegr/scheduling