Merge pull request #1884 from Molytho/master

Adjust GitStatusOptions to match structure of native libgit2

Author: bording

Diff for: LibGit2Sharp/Core/GitStatusOptions.cs

@@ -13,6 +13,8 @@ internal class GitStatusOptions : IDisposable
 
         public GitStrArrayManaged PathSpec;
 
+        public IntPtr Baseline = IntPtr.Zero;
+
         public void Dispose()
         {
             PathSpec.Dispose();