Implement reorder of segments in http requests #374
Merged
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Analyze requested ranges and do following:
This allows to reduce data traffic and avoids problem of different implementations on server side.
Some servers does such merging themselves. Or does resorting under the hoot.
There are many ROOT files where streamer info and main directory key situated together -
so one can read both of them now with single http request instead of multi-range ones.
In connected issue #372 this allows to reduce number of requests - while server does not support multirange requests at all.
Also this PR solves VERY OLD problem with tbits3 example, where unsorted segments in request leads to wrong reply from the server. In JSROOT special handling was implemented to abort such request and restart with single range requests. So now multi-range works properly and very fast for this old file.