Jenkins: block jobs when upstream projects are building
Jenkins: block jobs when upstream projects are building

This should reduce the chance the dependent projects are build in the
wrong order.

git-svn-id: 6eed74fe9a15c8da84b9a8d7f2960c0406113ece@1789342 13f79535-47bb-0310-9956-ffa450edef68

anchela/sling,headwirecom/sling,JEBailey/sling,labertasch/sling,trekawek/sling,mcdan/sling,ieb/sling,ieb/sling,awadheshv/sling,ieb/sling,vladbailescu/sling,anchela/sling,ieb/sling,awadheshv/sling,awadheshv/sling,roele/sling,ist-dresden/sling,awadheshv/sling,trekawek/sling,JEBailey/sling,ieb/sling,JEBailey/sling,tmaret/sling,labertasch/sling,JEBailey/sling,mcdan/sling,awadheshv/sling,roele/sling,awadheshv/sling,ist-dresden/sling,mcdan/sling,mcdan/sling,anchela/sling,tmaret/sling,ist-dresden/sling,ist-dresden/sling,tmaret/sling,vladbailescu/sling,ieb/sling,vladbailescu/sling,labertasch/sling,ist-dresden/sling,trekawek/sling,headwirecom/sling,tmaret/sling,trekawek/sling,mcdan/sling,labertasch/sling,JEBailey/sling,roele/sling,labertasch/sling,vladbailescu/sling,roele/sling,tmaret/sling,anchela/sling,headwirecom/sling,anchela/sling,vladbailescu/sling,roele/sling,trekawek/sling,headwirecom/sling,headwirecom/sling,trekawek/sling,mcdan/sling