Public: Restore the samples/validation classes/marker
Its needed by Eclipse or it throws
an error because it can't find the classes/ directory where it is
supposed to dump compiled files.

Review at http://gwt-code-reviews.appspot.com/856802


git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@8758 8db76d5a-ed1c-0410-87a9-c151d255dfc7
diff --git a/samples/validation/war/WEB-INF/classes/marker b/samples/validation/war/WEB-INF/classes/marker
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/samples/validation/war/WEB-INF/classes/marker