RFR: XXS: JDK-8213265: fix missing newlines at end of files

[Jonathan Gibbons]

Please review a simple fix which fixes some files which did not end with 
a newline character.

The changes were performed automagically by the following command:
 for i in $(find test/langtools -name \*.html | xargs pcregrep -LM 
'\n$' ) ; do echo >> $i ; done

The webrev shows no changes for the individual files; the patch shows 
the changes to the last line.

JBS: https://bugs.openjdk.java.net/browse/JDK-8213265
Webrev: http://cr.openjdk.java.net/~jjg/8213265/webrev.00/index.html

-- Jon