[9] Review request: 8179454: Build FX docs for HTML 5

[Kevin Rushforth]

Chien or Dave,

Please review this simple request to enable running javadoc with the 
'-html5' option. This will match what the JDK does when building the 
docs bundle (which now also includes javafx.* modules).

https://bugs.openjdk.java.net/browse/JDK-8179454

the one-line diff is in the JBS bug, and repeated here:

diff --git a/build.gradle b/build.gradle
--- a/build.gradle
+++ b/build.gradle
@@ -3564,6 +3564,7 @@
    }
    options.addBooleanOption("XDignore.symbol.file").setValue(true);
    options.addBooleanOption("Xdoclint:${DOC_LINT}").setValue(IS_DOC_LINT);
+    options.addBooleanOption("html5").setValue(true);
    options.addBooleanOption("javafx").setValue(true);
    options.addBooleanOption("use").setValue(true);

-- Kevin