RFR JDK-8211399: libxslt fails to build with glibc 2.26

[Arunprasad Rajkumar]

Hi,

Please review the following PR targeted for JDK-8211399.

https://github.com/javafxports/openjdk-jfx/pull/314

https://bugs.openjdk.java.net/browse/JDK-8211399

Thanks,
Arun