Revert rev 1.3. While that change appears to make the behaviour similar to

Revert rev 1.3.  While that change appears to make the behaviour similar to
binutils 2.15, it introduces bogus failures when inter-library dependencies
are present.

With the binutils 2.17 behaviour restored, --as-needed will cause linker
failures when necessary inter-library dependencies are not present.  This is
actually a good thing as binutils 2.15 will silently produce executables
that will fail at runtime in those cases.

ok miod@