[sql] Import reference version of SQLite 3.17..

third_party/sqlite/sqlite-src-3170000/vsixtest/MainPage.xaml.h

+//
+// MainPage.xaml.h
+// Declaration of the MainPage class.
+//
+
+#pragma once
+
+#include "MainPage.g.h"
+
+namespace vsixtest
+{
+        /// <summary>
+        /// An empty page that can be used on its own or navigated to within a Frame.
+        /// </summary>
+        public ref class MainPage sealed
+        {
+        public:
+                MainPage();
+                void UseSQLite(void);
+
+        };
+}