Cross scripts now live in sysroot/$arch-distro-os/crossscripts, this conveys
that they are no longer native system dependant and emphasises their purpose.
Bump the staging ABI and implement a simple migration from ABI 3 to ABI 4.
Signed-off-by: Joshua Lock <josh@linux.intel.com>
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>