* [monotouch-test] Disable EmptyNib tests due to Xcode9 no longer builds nibs if deployment target < 7.0
EmptyNib.xib : ibtool error : Compiling IB documents for earlier than iOS 7 is no longer supported.
* [monotouch-test] Fixt CalendarTest.TestEnumerateDates
It seems that NSCalendar.CurrentCalendar.EnumerateDatesStartingAfterDate
won't stop enumerating unless `stop` is set to `true`.
* [Tests] Add CheckXcodeVersion support for Xcode 9
* [introspection] Avoid introspection to crash with Xcode 9 Beta 1
* [monotouch-test] bring back LogicalName removal from monotouch-test.csproj
Rolf Bjarne Kvinge
Timothy Risi
Alex Soto