<i18n dev> RFR: 8159766: "Switching encoding from UTF-8 to ISO-8859-1" log message should be trace/debug message

[Masayoshi Okutsu]

Hi,

Please review the fix for JDK-8159766. The logging code has been removed 
after all. No additional regression test. The message should no longer 
be logged to the .jtr file with 
java/util/ResourceBundle/UTF8Properties/CodePointTest.java.

Issue:
https://bugs.openjdk.java.net/browse/JDK-8159766
Wevrev:
http://cr.openjdk.java.net/~okutsu/9/8159766/webrev.00

Thanks,
Masayoshi