Fixed iOS logic to not to include Content-Length when chunkedMode=true
Fixed Android logic preventing chunkedMode to be enabled for http uploads
Added tests for chunkedMode
Documented chunkedMode not supported on Windows
Documented Uploading of an empty file is not supported for chunkedMode=true and multipart=false for iOS, pended the corresponding test
Adds iOS and Windows implementation; mention in the docs
Adds corresponding tests
Increases spec.35 timeout for Windows Phone 8.1 case as it contains 2 download operations
Increases timeout for Windows case for spec.10, spec.21 (abort right away), spec.15 (unknown host)
Documents the latency quirk caused by BackgroundDownloader usage
[Windows] Mark an upload aborted to be cancelled right away as it did not have enough time to be created when abort was called in filetransfer.spec.21 (so that unexpected httpWin fired)
Extended test buffer to avoid unexpectedCallbacks.httpWin on Windows & local test server (filetransfer.spec.21)
Mikejo5001