glibc: Separate locale files to their own sstate task

glibc: Separate locale files to their own sstate task

Putting the locale and script files into the sysroot for use by their
specific recipes used to be a simple way to share the files. With RSS,
we don't want to copy these into many different recipes so put these
files in their own sstate task.

(From OE-Core rev: c283f2532851e2a65e08fe7b3fd71c5d9abb70f2)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>