Add remark to Zip/FastZip.cs UseZip64 property

Author: jfreilly

src/Zip/FastZip.cs

@@ -277,6 +277,14 @@ public IEntryFactory EntryFactory
 		/// <summary>
 		/// Gets or sets the setting for <see cref="UseZip64">Zip64 handling.</see>
 		/// </summary>
+        /// <remarks>
+        /// The default value is dynamic which is not backwards compatible with old
+        /// programs and can cause problems with XP's built in compression which cant
+        /// read Zip64 archives. However it does avoid the situation were a large file
+        /// is added and cannot be completed correctly.
+        /// NOTE: Setting the size for entries before they are added is the best solution!
+        /// By default the EntryFactory used by FastZip will set fhe file size.
+        /// </remarks>
 		public UseZip64 UseZip64
 		{
 			get { return useZip64_; }
@@ -673,14 +681,7 @@ static bool NameIsValid(string name)
 		bool createEmptyDirectories_;
 		FastZipEvents events_;
 		IEntryFactory entryFactory_ = new ZipEntryFactory();
-
 		INameTransform extractNameTransform_;
-		
-		// Default is dynamic which is not backwards compatible and can cause problems
-		// with XP's built in compression which cant read Zip64 archives.
-		// However it does avoid the situation were a large file is added and cannot be completed correctly.
-		// NOTE: Setting the size for entries before they are added is the best solution!
-		// By default the EntryFactory used by FastZip will set fhe file size.
 		UseZip64 useZip64_=UseZip64.Dynamic;
 
 #if !NETCF_1_0