[8u] RFA: 8210350: -Wl,-z,defs JDK 8 build failure

[Severin Gehwolf]

Hi,

Please approve this JDK 8-only change fixing the build when -Wl,-z,defs 
is being passed as extra linker flags. The patch has been reviewed by
Erik Joelsson on build-dev. An equivalent fix is already present in JDK
9+.

Bug: https://bugs.openjdk.java.net/browse/JDK-8210350
webrev: http://cr.openjdk.java.net/~sgehwolf/webrevs/JDK-8210350/webrev.01/
Review-thread: http://mail.openjdk.java.net/pipermail/build-dev/2018-September/023352.html

Thanks,
Severin