Support Ogg audio and video file extensions and Internet media types

[niallkennedy]

Add support for the oga file extension for Ogg audio. Add Ogg video (.ogv, video/ogg) as a known and accepted video type.

Based on official file extensions and MIME declarations from Xiph:
​http://wiki.xiph.org/MIME_Types_and_File_Extensions

Affects accepted MIME array in wp-includes/functions.php .

add oga as a supported audio/ogg file extension. add support for ogg video.

+1 on this.

+1 on this. Reviewed the patch, looks good to me. Thanks for taking care!

Has been partially applied in [12581] some days ago.

Related: #7225, #8194

Needed types need to be rechecked against current trunk and a new patch needs to be created. Should be committed then.

Here is a new patch which adds ogv and oga against current trunk

(In [13349]) Support Ogg audio and video file extensions. Fixes #11519 props niallkennedy