hg: panama/dev: Make sure extract64x is marked as being evex

[razvan.a.lupusoru at intel.com]

Changeset: b135bbfcfcc2
Author:    rlupusoru
Date:      2018-08-22 16:47 -0700
URL:       http://hg.openjdk.java.net/panama/dev/rev/b135bbfcfcc2

Make sure extract64x is marked as being evex

! src/hotspot/cpu/x86/assembler_x86.cpp