PATCH: Support LD_AS_NEEDED

[Ian Lance Taylor]

Jakub Jelinek <jakub@redhat.com> writes:

> echo 'exec /usr/bin/ld --as-needed "$@"' >> ~/bin/ld

echo 'exec /usr/bin/ld ${LD_AS_NEEDED:+--as-needed} "$@"' >> ~/bin/ld

Ian