busybox: FREETZ_BUSYBOX_NC_EXTRA is selected by "mandatory"

git-svn-id: file:///var/svn/freetz/trunk@10030 149334a1-2f27-0410-a3b9-fc62619ac1e6
usbroot: remove old "cases" for increased kernel versions

git-svn-id: file:///var/svn/freetz/trunk@10031 149334a1-2f27-0410-a3b9-fc62619ac1e6
usbroot: get rid of $HDRevision stuff for kernel 2.6.32 (refs #2015)

git-svn-id: file:///var/svn/freetz/trunk@10032 149334a1-2f27-0410-a3b9-fc62619ac1e6
add FREETZ_TAGET_(IPV6_SUPPORT) to options.cfg, used by openvpn

git-svn-id: file:///var/svn/freetz/trunk@10033 149334a1-2f27-0410-a3b9-fc62619ac1e6