RFR: 8301854: C4819 warnings were reported in libfreetype on Windows

[Yasumasa Suenaga]

This is subtask of https://github.com/openjdk/jdk/pull/12427 .

I have seen C4819 warning in libfreetype files on Windows (CP932: Japanese locale)


d:\github-forked\jdk\src\java.desktop\share\native\libfreetype\src\autofit\afscript.h(1): warning C4819: ファイルは、現在のコード ページ (932) で表示できない文字を含んでいます。データの損失を防ぐために、ファイルを Unicode 形式で保存してください。


I added C4819 to DISABLED_WARNINGS_microsoft for libfontmanager and for libfreetype because they are 3rd-party libraries.

-------------

Commit messages:
 - 8301854: C4819 warnings were reported in libfreetype on Windows

Changes: https://git.openjdk.org/jdk/pull/12436/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12436&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8301854
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/12436.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12436/head:pull/12436

PR: https://git.openjdk.org/jdk/pull/12436