8072053 and 8071947 fixes for aarch64/stage

[Vladimir Kozlov]

Would be nice to have next bugs fixed before we push the port into main 
jdk9:

https://bugs.openjdk.java.net/browse/JDK-8072053
AARCH64: remove src/java.base/unix/native/libjli/aarch64/jvm.cfg

https://bugs.openjdk.java.net/browse/JDK-8071947
AARCH64: Apply 8068655 frame::safe_for_sender() computes incorrect 
sender_sp value for interpreted frames

Thanks,
Vladimir