* Generate RegionCode constants for testing.

This generates the RegionCode class that contains string constants for testing using the build tools.

Context: b/237181793

* Fix typo

* Use plain strings for region codes not in the metadata.

* Apply code review suggestions

* Rewrite ClassWriter with Builder pattern and add javadoc support.

* Use setJavadoc instead of accumulating.

Bumps [junit:junit](https://github.com/junit-team/junit4) from 4.13.1 to 4.13.2.
- [Release notes](https://github.com/junit-team/junit4/releases)
- [Changelog](https://github.com/junit-team/junit4/blob/main/doc/ReleaseNotes4.13.1.md)
- [Commits](https://github.com/junit-team/junit4/compare/r4.13.1...r4.13.2)

---
updated-dependencies:
- dependency-name: junit:junit
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: mandlil <138015259+mandlil@users.noreply.github.com>

Bumps [org.codehaus.mojo:build-helper-maven-plugin](https://github.com/mojohaus/build-helper-maven-plugin) from 1.9.1 to 3.4.0.
- [Release notes](https://github.com/mojohaus/build-helper-maven-plugin/releases)
- [Commits](https://github.com/mojohaus/build-helper-maven-plugin/compare/build-helper-maven-plugin-1.9.1...3.4.0)

---
updated-dependencies:
- dependency-name: org.codehaus.mojo:build-helper-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

* class file java version check wrt maven config

* Recommiting the jars built with updated java version

* Updating encoding for demo as well for consistency

1) Changing the BuildMetadataFromXml to only set
same_mobile_and_fixed_line_pattern and
national_prefix_optional_when_formatting if they differ from default
values, and the domestic_carrier_code_formatting_rule,
international_prefix and national_prefix_formatting_rule if there is
one.

2) Adding a test with some golden data for the BuildMetadataJsonFromXml.

3) Adding to the proto a missing explicit default false.

4) Updating a couple of methods in the Phonemetadata.java class to have
names that match those of the auto-generated Phonemetadata used by the
CPP build, now that we use those methods when building the metadata.

5) Fix to ant build file to enable the junit command to still work (instructions on open-source on how to regenerate metadata files refer to this)

Resulting data is smaller for Java and C++ and the resulting BuildMetadataJsonFromXml code is cleaner.

We remove the dependency on protobuf (protobuf-javanano) from the Java library, resurrecting java/libphonenumber/src/com/google/i18n/phonenumbers/Phonemetadata.java which was present until libphonenumber-7.1.1.

Does not affect the C++ or JavaScript libraries.

Great!

Normally it is not a good idea to place <version> constraints in the
definition of plugins in pom.xml unless a specific version really is
needed.

This patch removes the constraints.

There are various benefits to this, one of them is that it will always
build with the latest packaged version of the plugins on a Debian or
Ubuntu system.

Author: daniel@pocock.pro

R=jia.shao.peng@gmail.com
BUG=

Review URL: https://codereview.appspot.com/122480043

This CL (depending on CL 5376090) adds the Maven support for the offline phone number geocoder.

All the geocoding-related code/data is moved to the new directory java/geocoder.
Additionally a pom.xml file is added to java/ and java/geocoder/.

The pom.xml file located in java/ is the parent pom file which contains the configuration (SCM, developers, encoding...) that applies to both the libphonenumber and geocoder modules.
The libphonenumber and geocoder Maven modules inherit from this parent pom file therefore they don't need to duplicate this configuration.

I also moved build.xml and release_notes.txt back to java/.

BUG=57

Review URL: http://codereview.appspot.com/5395054

This is required for the incoming Maven refactoring adding a separate geocoder module.

BUG=57

Review URL: http://codereview.appspot.com/5376090

Review URL: http://codereview.appspot.com/5193044