AdSupport no longer required

According to the latest Google Analytics SDK, AdSupport is not listed anywhere. https://developers.google.com/analytics/devguides/collection/ios/v3/
[GoogleCast] Added GoogleCast 2.0 Release binding
[GoogleCast] Added GoogleCast to root makefile
[GoogleAdMobAds] Updated to version 6.8
	- No Api Changes
[GoogleAdmobAds] Added CoreTelephony Framework required by Version 6.8
3.03c support

No longer a dependency on AdSupport.framework and thereby OK with Apple acceptance criteria
[SDWebImage] Use version tag so we do not break builds on new versions
[SDWebImage] Change to version 3.5
[GoogleMaps] Update GoogleMaps to version 1.7.0
[GoogleMaps] Added missing flags LinkWith attribute
Merge pull request #189 from nberardi/patch-1

[GoogleAnalytics] AdSupport no longer required
Merge pull request #193 from stefandevo/patch-1

[GoogleAnalytics] 3.03c support
Merge remote-tracking branch 'upstream/master'

Conflicts:
	GoogleAdMobAds/binding/libGoogleAdMobAds.linkwith.cs
fix appstore validate rejects