fwr: allow recording in h264 codec, fix flash error onBWCheck, move to flash player 11.1 (flex SDK 4.6)

git-svn-id: svn+ssh://kelev.kaltura.com/usr/local/kalsource/front/workspaces/krecord/trunk@93579 6b8eccd3-e8c5-4e7d-8186-e12b5326b719