"inst busybox" no longer seems to work when busybox is at
/sbin/busybox. Reproduced on Fedora 18 (dracut-023-39.git20120910).
Use type -P to find the full path to busybox to solve this problem.
Currently in dracut busybox module, we hard-code the list of binaries
available in busybox. Actually we can get this list by running busybox
without any arguments.
Also, if find_binary() finds nothing, we would symlink $initdir/
which is not we expect.
Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com>
Harald Hoyer