[TIMOB-19154] iOS9: Deprecate NSURLSession and instead use NSURLConnection for >=iOS7

[cheekiatng]

JIRA: https://jira.appcelerator.org/browse/TIMOB-19154

[pec1985]

PR breaks HTTClient on iOS 9

var client = Ti.Network.createHTTPClient({
    onload : function(e) {
        alert('PASS');
    },
    onerror : function(e) {
        alert('FAIL');
    },
    cache: false
});
client.open('GET', 'http://httpbin.org/get');
client.send();

With an internal error

App Transport Security has blocked a cleartext HTTP (http://) resource load since it is insecure. Temporary exceptions can be configured via your app's Info.plist file

PR REJECTED

[pec1985]

Blog describing the problem: http://ste.vn/2015/06/10/configuring-app-transport-security-ios-9-osx-10-11/

[pec1985]

Ignore those comments, did not see your comment in the Jira ticket.

[cheekiatng]

APPROVED.