Fix compilation with LDFLAGS=-Wl,--no-add-needed

Fix compilation with LDFLAGS=-Wl,--no-add-needed

If you link against a library A that itself links against a library B,
it may or may not work to use symbols from library B in your executable;
this is known as "indirect linking". GNU ld does indirect linking by
default (but it can be disabled using --no-add-needed), but the new
experimental GNU gold linker does not do this. It's an easy fix for us,
as the tests are all already done in ./configure, we just need to tell
the Makefile.ams to use the results.

This should fix Debian bug #556677, if they ever start using this
branch.

[crmafra: Folded Andreas Metzler patch to update debian/changelog]

Signed-off-by: Brad Jorsch <anomie@users.sourceforge.net>