Adds CORS support (XDomainRequest) for IE7+ still through XMLHttpRequest#107

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3F wants to merge 3 commits intodevelopit:mainfrom 3F:XDomainRequest-support

+8-5

Commits on Jan 8, 2019

Adds CORS support (XDomainRequest) for IE7+ still through XMLHttpRequest
3F
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Commits on Jan 9, 2019

fix a typo with status
3F
authored

Commits on Jan 13, 2019

status shouldn't be equal to zero. My full explanation of XHR impl for load event, here: developit#107
3F
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