merge fixes from develop to release4.11.0
Merge commit '5ae5a84778fa1e9a9a61aa218fad6244d1e9cdb1' into release4.11.0
update release notes with recent checkins
Updated with the release of FP 11.9 and AIR 3.9
Merge branch 'release4.11.0' of https://git-wip-us.apache.org/repos/asf/flex-sdk into release4.11.0