display warning msg before reporting MediaError
related to https://github.com/mangui/HLSprovider/issues/197
correctly parse #EXT-X-KEY, handle extra commas, not followed by attributes
related to https://github.com/mangui/HLSprovider/issues/207
avoid creating useless string objects when parsing encrypted playlists
TS parsing: keep parsing PAT until PMT is found
save one boolean, and might improve playback of broken TS
optimize playlist parsing
loop once instead of 3 times
dont use regexp but line length to discard blank-line (blank line terminated with CR/LF length is 1)
related to https://github.com/mangui/HLSprovider/issues/212
display warning traces to track down errors with JWPlayer
related to https://github.com/mangui/HLSprovider/issues/202
update swf/swc