[8u20] Request for approval: 8033180 - An inappropriate newline symbol in the help section

[Alexander Zuev]

One more backport request for the jdk9 fix.

Bug : https://bugs.openjdk.java.net/browse/JDK-8033180
Fix pushed as: 
http://hg.openjdk.java.net/jdk9/jdk9/langtools/rev/be66dd077d3f
Fix applies without an issue to 
http://hg.openjdk.java.net/jdk8u/jdk8u-dev/langtools
Webrev is available at: http://cr.openjdk.java.net/~kizune/8033974/webrev.00

/Alex