hg: kulla/dev/langtools: Fix: String s = "a" + "b";

[robert.field at oracle.com]

Changeset: 106743621366
Author:    rfield
Date:      2015-02-18 17:29 -0800
URL:       http://hg.openjdk.java.net/kulla/dev/langtools/rev/106743621366

Fix: String s = "a" + "b";
Causing: bad operand type java.lang.String for unary operator '+++'.
See email 2/18.
Also, allow extra options for ParseTask too.

! repl/TODO
! repl/src/impl/EvaluationStateImpl.java
! repl/src/impl/TaskFactory.java
! repl/testng/test/SimpleRegressionTest.java