allow a -Dnightly= flag on Approval script so it can run against nightly rcs
allow a -Dnightly= flag on Approval script so it can run against nightly rcs

shyamalschandra/flex-sdk,apache/flex-sdk,shyamalschandra/flex-sdk,shyamalschandra/flex-sdk,apache/flex-sdk,apache/flex-sdk,apache/flex-sdk,shyamalschandra/flex-sdk,apache/flex-sdk,shyamalschandra/flex-sdk,apache/flex-sdk,shyamalschandra/flex-sdk