PATCH [v3]: makes --gc-sections compatible with -r/-q

[Tristan Gingold]

>
> These tests are failing on ppc64, s390, s390x and x86_64.

I can't reproduce the issue on x86_64 (SUSE Linux Enterprise Server  
10 (x86_64) gcc 4.1.0))
and GNU ld (GNU Binutils) 2.18.50.20080122.