RFR: JDK-8233636: Make jpackage an incubator and remove tool provider implementation

Thu Nov 7 21:45:33 UTC 2019

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).

This changes the module name, and base package name from jdk.jpackage to 
jdk.incubator.jpackage.

This removes the "provides" statement in module-info so 
jdk.incubator.jpackage can not directly be discovered as a ToolProvider, 
but it also exports jdk.incubator.jpackage which now contains 
ToolProviderFactory.java which can be used for the same purpose.

[1] https://bugs.openjdk.java.net/browse/JDK-8233636

[2] https://cr.openjdk.java.net/~herrick/8233636/webrev-02

/Andy