Change-Id: I270acebca3e38114362af4d682d5034fda942c84
MSVC C4996 triggers upon use of functions like fopen, and suggests use of non-portable Microsoft replacements. Disable it project wide, and remove the pragmas littered throughout the tree. Change-Id: I8b890bbfd3cd7224c25350bd28f334facd8b7783
Move webvtt support code into webvtt sub dir, and update build/includes as necessary. Change-Id: I1c0891afd413e92d43ba54b61cc8dc694c0bff36