hg: code-tools/jtreg: 2 new changesets

[jonathan.gibbons at oracle.com]

Changeset: 33f1ab385957
Author:    jjg
Date:      2018-04-23 16:40 -0700
URL:       http://hg.openjdk.java.net/code-tools/jtreg/rev/33f1ab385957

update spec version

! src/share/doc/javatest/regtest/tag-spec.html

Changeset: 7b1496d2790e
Author:    jjg
Date:      2018-04-23 16:46 -0700
URL:       http://hg.openjdk.java.net/code-tools/jtreg/rev/7b1496d2790e

update to use JT Harness 6.0 b01

! make/Defs.gmk
! make/build-all.sh