RFR: 8327856: Convert applet test SpanishDiacriticsTest.java to a main program [v3]

[Phil Race]

> Converts the  manual applet test in the files ..
> SpanishDiacriticsTest/SpanishDiacriticsTest.html
> SpanishDiacriticsTest/SpanishDiacriticsTest.java
> .. to a main program using PassFailJFrame
> 
> Added requires windows since it seems very windows-specific.
> 
> I got rid of the redundant extra directory which makes the .java file "new" according to github but it is largely changed anyway

Phil Race has updated the pull request incrementally with one additional commit since the last revision:

  8327856

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/18208/files
  - new: https://git.openjdk.org/jdk/pull/18208/files/7fb3fe7c..73aa1b7a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18208&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18208&range=01-02

  Stats: 2 lines in 1 file changed: 0 ins; 1 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/18208.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18208/head:pull/18208

PR: https://git.openjdk.org/jdk/pull/18208