Added iOS64 Unified API Sample
Copied from the existing Classic API Sample, with the necessary changes to compile under Unified API
Component packaging updated for iOS64 Unified API
Added ios-unified definition to the component.yaml, as well as the Unified Sample
Updated xamarin-component.exe to deal with new library platform target ios-unified
Fixed iOS64 Unified API Sample's reference to the actual lib
Removed Unified Sample
Merge pull request #83 from Redth/master

iOS64 Unified API Support for Component Packaging (and Sample)