Remove insserv from OE-Core. It did have uses but we've optimised the sysvinit
scripts as needed and there are other directions init systems are moving now.
It no longer belongs in the core.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

This change makes the purpose of the staging directory more obvious and
the taskname more true to what it now actually does.

The layout version number is increased due to the change in layout
but code to convert existing directories and insert a symlink for
backwards compatibility is included.

Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>

git-svn-id: https://svn.o-hand.com/repos/poky/trunk@4830 311d38ba-8fff-0310-9ca6-ca027cbcb966