Jump menu default value incorrectly set when using absolute link option

If you select the "Use absolute link" checkbox on the path field for your jump menu, it'll fail to set the default value when you visit a page from the jump menu. The issue is that the options array uses the path field values which are absolute urls, but when setting the default value it uses a root-relative url so there is never a match. The attached patch will look at the absolute link checkbox for the jump menu's selected path field and will use the appropriate url when setting the default value.