[foreign] RFR panama fails to build because of use of x87 instructions in 64 bit mode

[sundararajan.athijegannathan at oracle.com]

Please review.

Bug: https://bugs.openjdk.java.net/browse/JDK-8238217

Webrev: http://cr.openjdk.java.net/~sundar/8238217/webrev.00/

PS. "jdk_foreign" tests are fine on Mac

Thanks,

-Sundar