hg: jdk9/dev/langtools: 8134007: Improve string folding

[maurizio.cimadamore at oracle.com]

Changeset: 891db670a8cb
Author:    mcimadamore
Date:      2015-08-31 15:50 +0100
URL:       http://hg.openjdk.java.net/jdk9/dev/langtools/rev/891db670a8cb

8134007: Improve string folding
Summary: Generalize string folding algorithm to detect mulitple groups of foldable constants within an concat expression
Reviewed-by: jlahoda

! src/jdk.compiler/share/classes/com/sun/tools/javac/parser/JavacParser.java
+ test/tools/javac/parser/8134007/T8134007.java