hg: code-tools/jcheck: 7902264: jcheck extension broken after upgrade to mercurial 4.3 (and python2.7)

[jonathan.gibbons at oracle.com]

Changeset: 80ed80843d64
Author:    tbell
Date:      2018-08-10 12:30 -0700
URL:       http://hg.openjdk.java.net/code-tools/jcheck/rev/80ed80843d64

7902264: jcheck extension broken after upgrade to mercurial 4.3 (and python2.7)
Reviewed-by: jjg

! jcheck.py