hg: tiered-attrib/dev/langtools: adjusting golden files for tests with same standard output

[vicente.romero at oracle.com]

Changeset: 7f946e88c7a1
Author:    vromero
Date:      2015-03-27 12:05 -0700
URL:       http://hg.openjdk.java.net/tiered-attrib/dev/langtools/rev/7f946e88c7a1

adjusting golden files for tests with same standard output

! test/tools/javac/lambda/MethodReference20.out