glibc-package: Avoid race sstate races with do_stash_locale
The change to make do_stash_locale an sstate task between do_install and
do_package has some unforeseen problems since the function deletes part of
${D} but may or may not run depending on whether the task is installed from
sstate.
This cleans up the current "pre packaging" function to be more deterministic
and result in the same set of files, whichever code path we end up reaching
that point by. Its not an ideal sitation but it should avoid the race
failures we've seen on some builds.
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
