Update for Xcode 10.1 final release, including last minute Pen/Tap API (#5055)

Make.config

@@ -47,8 +47,8 @@ IOS_PACKAGE_UPDATE_ID=$(shell printf "2%02d%02d%02d%03d" $(IOS_PACKAGE_VERSION_M
 
 # Xcode version should have both a major and a minor version (even if the minor version is 0)
 XCODE_VERSION=10.1
-XCODE_URL=http://xamarin-storage/bot-provisioning/xcodes/Xcode_10.1_Beta_3.xip
-XCODE_DEVELOPER_ROOT=/Applications/Xcode101-beta3.app/Contents/Developer
+XCODE_URL=http://xamarin-storage/bot-provisioning/xcodes/Xcode_10.1.xip
+XCODE_DEVELOPER_ROOT=/Applications/Xcode101.app/Contents/Developer
 
 XCODE94_VERSION=9.4
 XCODE94_URL=http://xamarin-storage/bot-provisioning/xcodes/Xcode_9.4.xip

src/uikit.cs

@@ -18433,4 +18433,45 @@ namespace UIKit {
 #endif // !WATCH
 	}
 
+#if !WATCH
+	[iOS (12,1)]
+	[NoWatch][NoTV]
+	[Native]
+	public enum UIPencilPreferredAction : long {
+		Ignore = 0,
+		SwitchEraser,
+		SwitchPrevious,
+		ShowColorPalette,
+	}
+
+	[iOS (12,1)]
+	[NoWatch][NoTV]
+	[BaseType (typeof (NSObject))]
+	interface UIPencilInteraction : UIInteraction {
+		[Static]
+		[Export ("preferredTapAction")]
+		UIPencilPreferredAction PreferredTapAction { get; }
+
+		[Wrap ("WeakDelegate")]
+		[NullAllowed]
+		IUIPencilInteractionDelegate Delegate { get; set; }
+
+		[NullAllowed, Export ("delegate", ArgumentSemantic.Weak)]
+		NSObject WeakDelegate { get; set; }
+
+		[Export ("enabled")]
+		bool Enabled { [Bind ("isEnabled")] get; set; }
+	}
+
+	interface IUIPencilInteractionDelegate {}
+
+	[iOS (12,1)]
+	[NoWatch][NoTV]
+	[Protocol, Model]
+	[BaseType (typeof (NSObject))]
+	interface UIPencilInteractionDelegate {
+		[Export ("pencilInteractionDidTap:")]
+		void DidTap (UIPencilInteraction interaction);
+	}
+#endif // !WATCH
 }