hg: code-tools/jtreg: 7901092: @requires: add support for RegExp matching

[jonathan.gibbons at oracle.com]

Changeset: 29ba008cb323
Author:    jjg
Date:      2014-11-20 16:34 -0800
URL:       http://hg.openjdk.java.net/code-tools/jtreg/rev/29ba008cb323

7901092: @requires: add support for RegExp matching
Contributed-by: andrey.nazarov at oracle.com

! make/tests/RequiresTest.gmk
! src/share/classes/com/sun/javatest/regtest/Expr.java
! src/share/doc/javatest/regtest/tag-spec.html
+ src/share/test/javatest/regtest/data/requires/RegexpTest.java