busybox: Support replace of rcS initscript
busybox: Support replace of rcS initscript

To replace the /etc/init.d/rcS and /etc/default/rcS files with custom
version, add a recipe producing a package which provides busybox-sysinit
and make sure it is picked instead of the busybox-sysinit package from
OE-lite/base (set DEFAULT_PREFERENCE to something higher than 1)

moths/base,oe-lite/base,hundeboll/base,kimrhh/base,hundeboll/base,oe-lite/base,hundeboll/base,kimrhh/base,esben/base,sknsean/base,kimrhh/base,diorcety/oe-lite-base,diorcety/oe-lite-base,hundeboll/base,oe-lite/base,moths/base,esben/base,sknsean/base,esben/base,hundeboll/base,esben/base,hundeboll/base,oe-lite/base,moths/base,sknsean/base,moths/base,sknsean/base,esben/base,kimrhh/base,oe-lite/base,sknsean/base,kimrhh/base,kimrhh/base,esben/base,sknsean/base,moths/base,oe-lite/base,moths/base