git: openjdk/mobile: 8234742: Improve handshake logging

[duke]

Changeset: b31e91cd
Author:    Robbin Ehn <rehn at openjdk.org>
Date:      2019-12-04 11:57:58 +0000
URL:       https://git.openjdk.java.net/mobile/commit/b31e91cd

8234742: Improve handshake logging

Reviewed-by: dholmes, pchilanomate

! src/hotspot/share/runtime/handshake.cpp
! src/hotspot/share/runtime/handshake.hpp
! src/hotspot/share/runtime/thread.hpp