Fire AVM1 initialize, construct and load events
Merge branch 'master' of github.com:mozilla/shumway into avm1events
Merge branch 'master' of github.com:mozilla/shumway into avm1events
Merge branch 'master' of github.com:mozilla/shumway into avm1events
Merge pull request #1726 from tobytailor/avm1events

Fire AVM1 initialize, construct and load events