GCC 4.5 update in natty, reverting the ld --as-needed default just for the natty release

[Matthias Klose]

Today's GCC 4.5 update in natty reverts the ld --as-needed default just for the
natty release.  All issues with ld --as-needed in main were resolved until
alpha3 release, and a good number in universe too.  There is however still a
large number of packages in the archive which don't build yet with this default,
so to concentrate on more important issues, this default is reverted again, and
will re-enabled with the start of the o-series.

Please do not drop ld --as-needed related patches because the package seems to
build with them.

Many thanks to all those submitters for the around ~350 patches applied in natty.

  Matthias