toolchain-shar-template.sh: Limit xargs command line
It's possible to generate a command line in the relocate_sdk.sh script
which is too long (long paths, many files). This change limits the
xargs command line by breaking it up into smaller pieces.
One necessary side effect is that the -0 option is no longer used as it
doesn't seem to work properly with -n, so the file name arguments are
now quoted explicitly rather than \0 terminated.
Signed-off-by: Gary Thomas <gary@mlbassoc.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
