Add linker flag '-Wl,--as-needed' to remove unneeded library deps.
Add linker flag '-Wl,--as-needed' to remove unneeded library deps.

dpkg-shlibsdeps complains about useless dependencies.

siconos/siconos-deb,siconos/siconos-deb,siconos/siconos-deb,siconos/siconos-deb,siconos/siconos-deb,siconos/siconos-deb