RFR: JDK9 message drop interim L10n resource update

[Leo Jiang]

Hi,

Please review:
Webrev:
http://cr.openjdk.java.net/~ljiang/8169618/webrev/read/

for bug:
https://bugs.openjdk.java.net/browse/JDK-8169618

Please help us to review
  - over-translate, e.g. keywords should be not translated
  - not-translate, e.g. some sentences or strings are not translated while they should be.
  - any programming syntax error
  - multiple lines property with correct line ending '\n\'
  - the position of placefolder after translation
  - any other issues.

Thanks,
Leo