Merge pull request microsoft#2845 from Microsoft/develop

Merge develop into master.

Updates:

Adds support for Visual Studio 2017 Update 15.4.5
Update projections to target the 10.0.16299 Windows SDK
Address C++ compiler longevity issues

0.2 Preview (December 2017)

libdispatch now supports dispatch_specific APIs
Localization now properly supports language preferences
OSSpinLock APIs have now been defined for public use

Merge pull request microsoft#2814 from rajsesh-msft/1711.1_release

1711.1 release

Check if NSURLProtocolClient has private callback before calling it (m…

…icrosoft#2765)

* Check if NSURLProtocolClient has private callback before calling it

Fixes microsoft#2764

* - Coalesce headers
- Add test for a POST NSURLSessionTask

Make sure UIAlertViews are always rendered vertically (microsoft#2652)

WoCDisplayMode uses a 'presentationTransform' to rotate the presentation surface for certan apps, but we don't want to use that transform to rotate UIAlertViews (else they render sideways if the app is rotated).  This will be handled automatically when we move UIAlertView over Xaml (as we've already done for UIActionSheet), but for now we need to undo the 'presentationTransform' rotation for UIAlertViews.

Fixes microsoft#2611.

remove some things in the nuget.config that were messing things up (m…

…icrosoft#2368) (microsoft#2470)

Merge pull request microsoft#2120 from rajsesh-msft/release_1702.2

Release 1702.2

Merge pull request microsoft#1856 from ashvarma/release_1_23

Release 1 23

Merge pull request microsoft#1481 from tadam-msft/release_11_30

Release 11 30

Merge pull request microsoft#1309 from rajsesh-msft/cherry_pick_11_02

Cherry pick 11 02