hg: code-tools/jcheck: hg 2.9 compatibility - repo.branchtags() was removed

[john.coomes at oracle.com]

Changeset: 2fd4f81a719a
Author:    jcoomes
Date:      2014-01-25 21:58 -0800
URL:       http://hg.openjdk.java.net/code-tools/jcheck/rev/2fd4f81a719a

hg 2.9 compatibility - repo.branchtags() was removed

! jcheck.py