fixes #585 - Use tmdb updates api for people

MediaBrowser.Controller/Library/ILibraryManager.cs

@@ -166,6 +166,7 @@ namespace MediaBrowser.Controller.Library
         /// <param name="itemComparers">The item comparers.</param>
         /// <param name="prescanTasks">The prescan tasks.</param>
         /// <param name="postscanTasks">The postscan tasks.</param>
+        /// <param name="peoplePrescanTasks">The people prescan tasks.</param>
         /// <param name="savers">The savers.</param>
         void AddParts(IEnumerable<IResolverIgnoreRule> rules,
             IEnumerable<IVirtualFolderCreator> pluginFolders,
@@ -174,6 +175,7 @@ namespace MediaBrowser.Controller.Library
             IEnumerable<IBaseItemComparer> itemComparers,
             IEnumerable<ILibraryPrescanTask> prescanTasks,
             IEnumerable<ILibraryPostScanTask> postscanTasks,
+            IEnumerable<IPeoplePrescanTask> peoplePrescanTasks,
             IEnumerable<IMetadataSaver> savers);
 
         /// <summary>

MediaBrowser.Controller/Library/IPeoplePrescanTask.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace MediaBrowser.Controller.Library
+{
+    /// <summary>
+    /// Interface IPeoplePrescanTask
+    /// </summary>
+    public interface IPeoplePrescanTask
+    {
+        /// <summary>
+        /// Runs the specified progress.
+        /// </summary>
+        /// <param name="progress">The progress.</param>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <returns>Task.</returns>
+        Task Run(IProgress<double> progress, CancellationToken cancellationToken);
+    }
+}

MediaBrowser.Controller/MediaBrowser.Controller.csproj

@@ -96,6 +96,7 @@
     <Compile Include="Library\ILibraryPostScanTask.cs" />
     <Compile Include="Library\ILibraryPrescanTask.cs" />
     <Compile Include="Library\IMetadataSaver.cs" />
+    <Compile Include="Library\IPeoplePrescanTask.cs" />
     <Compile Include="Library\ItemUpdateType.cs" />
     <Compile Include="Library\IUserDataManager.cs" />
     <Compile Include="Library\UserDataSaveEventArgs.cs" />