The link errors addressed with commit
'7887e66d

 fix build with gcc 4.9.4'
occur only when linking with gold.
Thus apply the fix only if distro features contain ld-is-gold.

Signed-off-by: Max Krummenacher <max.oss.09@gmail.com>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>