RFR: JDK-8215574 : Investigate and document usage of --category, --copyright, --vendor and --description

[Alexander Matveev]

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).

- Removed unused TITLE which is just APP_NAME.
- Fix maintainer for DEB packages "vendor <email>" instead of vendor or 
just email.
- Fixed description for RPM, used to be just app name.
- Fixed version and description for .exe installers.
- Removed Comments and added Manufacturer attribute to Wix config file. 
Comments is not needed and Manufacturer is optional based on spec.

[1] https://bugs.openjdk.java.net/browse/JDK-8215574

[2] http://cr.openjdk.java.net/~almatvee/8215574/webrev.00/

Thanks,
Alexander