Hidden dirs are not copied when creating the built product archive

Hidden dirs are not copied when creating the built product archive
https://bugs.webkit.org/show_bug.cgi?id=90559

Reviewed by Carlos Garcia Campos.

Hidden dirs are not copied inside the built product archive
because the recursive copy command was ignoring them. We need those
hidden directories for the GTK WebKit2 testing bot to work fine.

* BuildSlaveSupport/built-product-archive:
(archiveBuiltProduct): replaced "*" by "." to include hidden
dirs/files.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@121886 268f45cc-cd09-0410-ab3c-d52691b4dbfc