hg: tsan/dev: Suppress races in j.u.c.ConcurrentHashMap

[aeubanks at google.com]

Changeset: b239596bc200
Author:    aeubanks
Date:      2019-06-26 09:07 -0700
URL:       http://hg.openjdk.java.net/tsan/dev/rev/b239596bc200

Suppress races in j.u.c.ConcurrentHashMap

These are appearing and it's not worth trying to understand j.u.c.

! src/java.base/share/native/launcher/main.c