[OpenJDK 2D-Dev] [9] RFR 8170579: The "Banner page" checkbox is disabled

[Prasanta Sadhukhan]

Hi All,

Please review a fix for jdk9 where it is seen that "Banner" checkbox in 
printer dialog is disabled in ubuntu16.10.

Bug: https://bugs.openjdk.java.net/browse/JDK-8170579
webrev: http://cr.openjdk.java.net/~psadhukhan/8170579/webrev.00/

Issue was, in ubuntu16.10 the attribute map does not have 
"job-sheet-supported" attribute returned by CUPS
so this category is not added to supported categories
[http://hg.openjdk.java.net/jdk9/client/jdk/file/7f09d558b044/src/java.desktop/unix/classes/sun/print/IPPPrintService.java#l1030]
so isAttributeCategorySupported() called by ServiceDialog returns false 
[http://hg.openjdk.java.net/jdk9/client/jdk/file/7f09d558b044/src/java.desktop/share/classes/sun/print/ServiceDialog.java#l2763]
resulting in Banner checkbox getting disabled.

Fix is to check if JobSheet category is supported in underlying 
platform, only then proceed with the test.

Regards
Prasanta