(maint) Note on install if auto-uninstall possible

When installing software at install/upgrade time, choco is going to
know if it is going to be able to automatically remove the software. It
should log that out so the user will know whether the package will need
a chocolateyUninstall.ps1 or not just for the uninstallatin parts.

src/chocolatey/infrastructure.app/services/ChocolateyPackageService.cs

@@ -358,14 +358,18 @@ public void handle_package_result(PackageResult packageResult, ChocolateyConfigu
                     var installersDifferences = _registryService.get_installer_key_differences(installersBefore, _registryService.get_installer_keys());
                     if (installersDifferences.RegistryKeys.Count != 0)
                     {
-                        //todo v1 - determine the installer type and write it to the snapshot
                         //todo v1 - note keys passed in 
                         pkgInfo.RegistrySnapshot = installersDifferences;
 
                         var key = installersDifferences.RegistryKeys.FirstOrDefault();
                         if (key != null && key.HasQuietUninstall)
                         {
                             pkgInfo.HasSilentUninstall = true;
+                            this.Log().Info("  {0} can be automatically uninstalled.".format_with(packageResult.Name));
+                        }
+                        else if (key != null)
+                        {
+                            this.Log().Info("  {0} may be able to be automatically uninstalled.".format_with(packageResult.Name));
                         }
                     }