[Build] Make staging of relevant files robust against file absence#2403

HannesWell merged 1 commit intoeclipse-platform:mastereclipse-platform/eclipse.platform.releng.aggregator:masterfrom

HannesWell:robust-file-statging-in-version-incrementHannesWell/eclipse.platform.releng.aggregator:robust-file-statging-in-version-incrementCopy head branch name to clipboard