RFR: JDK-8213941: Debian linux problems in JavaPackager

[Alexey Semenyuk]

Please review the jpackage fix for bug [1] at [2].

This is a fix for the JDK-8200758-branch branch of the open sandbox 
repository (jpackage).

- add --linux-app-category command line option

[1] https://bugs.openjdk.java.net/browse/JDK-8213941

2] http://cr.openjdk.java.net/~asemenyuk/8213941/webrev.00/

Thanks,
Alexey