Review Request: 8001460: build-infra: Linker warnings on macosx

[Erik Joelsson]

(resend attempt 4)

On macosx there were a bunch of warnings from the linker when building 
jdk that were easily fixed.

Examples:
ld: warning: ignoring file 
/HUDSON/workspace/2-build-macosx-x86_64/jdk8-newmake/1571/build/macosx-x86_64/jdk/objs/libfdlibm/e_acos.o
ld: warning: directory not found for option 
'-L/localhome/erik/build-infra-jdk8/build/macosx-x86_64-normal-server-release/jdk/lib/client' 


http://cr.openjdk.java.net/~erikj/8001460/webrev.root.01/
http://cr.openjdk.java.net/~erikj/8001460/webrev.jdk.01/

/Erik