hg: code-tools/jtreg: 7902380: jtreg fails to compile due to regular expression

[jonathan.gibbons at oracle.com]

Changeset: d15aad0ad815
Author:    jjg
Date:      2019-02-05 11:44 -0800
URL:       http://hg.openjdk.java.net/code-tools/jtreg/rev/d15aad0ad815

7902380: jtreg fails to compile due to regular expression

! make/jtreg.gmk