hg: jdk/sandbox: 8220690: ATTRIBUTE_ALIGNED requires GNU extensions enabled

[chris.hegarty at oracle.com]

Changeset: 021448dc442c
Author:    kbarrett
Date:      2019-03-19 14:08 -0400
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/021448dc442c

8220690: ATTRIBUTE_ALIGNED requires GNU extensions enabled
Summary: Use __typeof__(x) instead of typeof(x).
Reviewed-by: shade, sgehwolf

! src/hotspot/share/utilities/globalDefinitions_gcc.hpp