RFE simplify usage of patched module [by Robert Scholte, from jdk-dev]

[Christian Stein]

I extended the example project with some potential use-cases
for the `--patch-module-descriptor` option at [0]. Those use-cases
show which command line option usages can be replaced and
therefore simplified (as this RFE thread was coined) in the form
of the following example:

Today:

  --add-modules java.sql
  --add-reads org.astro=java.sql

With  `--patch-module-descriptor src/org.astro/test/module-info.java`:

  module org.astro { // name specifies the "primary" module to be patched
      requires java.sql; // adds and reads the specified module
  }

Cheers,
Christian

[0]: https://github.com/sormuras/java-module-patching#examples

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