HLS: throw error when FP 10.0 is encountered

[jeroen]

JW6 will officially support FP 10 and up. However, HLS is only supported as of 10.1.

Since 10.0 seems to still have a few % install base ( riastats), we should check the player version and throw an error if it's < 10.1. The error will bubble up and be presented in the styled error overlay of the player (just like a 404 not found).

[jeroen]

The best location for this check is likely at the beginning of load() inside AdaptiveProvider.as. An error can be sent with the following code:

sendMediaEvent(MediaEvent.JWPLAYER_MEDIA_ERROR, {message: "whaa!"});

The error message should say something like: HLS streaming requires Flash Player 10.1 at mimimum

[courtenay]

Added error message as specified above, in [2326]