FIX: [#37199] .ogg file is not recognized as a movie in File Browser

CHANGE: writing an animation in the ogg movie format now defaults to .ogv (ogg/video) which is recommended by Xiph.org for video
CHANGE: for .ogg files a check is added whether Blender can read it as a movie (is avi or ffmpeg movie), otherwise assume audio
CHANGE: the anim player now filters for the same extensions as the file browser

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk@61034 954f8c5b-7b00-dc11-b283-0030488c597c