Included video rotation and h263 convertion in akka-transcode

...ava/org/bigbluebutton/transcode/core/VideoTranscoder.java

...rg/bigbluebutton/transcode/core/ffmpeg/FFmpegCommand.java

.../org/bigbluebutton/transcode/core/ffmpeg/FFmpegUtils.java

...ain/java/org/bigbluebutton/common/messages/Constants.java