XMLHttpRequest advanced features

Adds more functionality to XHR (aka AJAX) requests like file uploads, transfer progress information and the ability to send form data. Previously known as XMLHttpRequest Level 2, these features now appear simply in the XMLHttpRequest spec.

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56 9.3 4.4
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14 52 57 10 10.0-10.2 4.4.3-4.4.4 4
11
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15 53 58 10.1 44 10.3 all 56 10
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37 57 52 11
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11.4 5 1.2 7.12
54 59 TP 45
55 60 46
56 61

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