ifupdown : moved unused files to obsolete dir

Signed-off-by: Frans Meulenbroeks <fransmeulenbroeks@gmail.com>

diff --git a/recipes/ifupdown/ifupdown-0.6.10/head-tail.patch b/recipes/obsolete/ifupdown/ifupdown-0.6.10/head-tail.patch
similarity index 100%
rename from recipes/ifupdown/ifupdown-0.6.10/head-tail.patch
rename to recipes/obsolete/ifupdown/ifupdown-0.6.10/head-tail.patch