kmod-openswan provides the KLIPS stack, included in Openswan. However,
Openswan works quite well with the in-kernel stack (NETKEY). Make
installation of KLIPS optional.
Signed-off-by: Kevin Locke <kevin@kevinlocke.name>
git-svn-id: svn://svn.openwrt.org/openwrt/packages@29580 3c298f89-4303-0410-b956-a3cf2f4a3e73