[GoogleAnalytics] Updated to v2 beta 4.

From the Google Analytics iOS SDK v2 beta 4 Changelog.txt:

> * Track methods changed to Send (e.g. trackView now called sendView).

I created the new bindings for all the `Send` methods and adapted the deprecation message comments to non-error `[Obsolete]` attributes on the old method bindings.

I also rebuilt the bindings DLL.