[8u20] request for review and approval to backport JDK-8043186, JDK-8029800 and JDK-8030726

[Jan Lahoda]

Hello,

I'd like to ask for a review of a backport fix, and an approval to push 
it to jdk8u/jdk8u-dev, for the following bug:

Bug: https://bugs.openjdk.java.net/browse/JDK-8043186
('javac test langtools/tools/javac/util/StringUtilsTest.java fails')
jdk9 fix: http://hg.openjdk.java.net/jdk9/dev/langtools/rev/4487f6f98252
jdk8u patch: http://cr.openjdk.java.net/~jlahoda/jdk8u/webrev-8043186-8/

The only difference between the JDK9 and JDK8u fixes is in this test:
test/com/sun/javadoc/testTopOption/TestTopOption.java

This fix requires also backport of these two other fixes:
Bug: https://bugs.openjdk.java.net/browse/JDK-8029800
jdk9 fix: http://hg.openjdk.java.net/jdk9/dev/langtools/rev/bc18278c195e
jdk8u patch: http://cr.openjdk.java.net/~jlahoda/jdk8u/webrev-8029800-8/
(applies cleanly except one change in copyright years which is already 
part of jdk8u/jdk8u-dev/langtools)

Bug: https://bugs.openjdk.java.net/browse/JDK-8030726
jdk9 fix: http://hg.openjdk.java.net/jdk9/dev/langtools/rev/c0ebdd10888c
jdk8u patch: http://cr.openjdk.java.net/~jlahoda/jdk8u/webrev-8030726-8/
Applies cleanly to: http://hg.openjdk.java.net/jdk8u/jdk8u-dev/langtools

Thanks,
    Jan