* 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.

* Removing whitespaces from download-junit-jars.sh

* Removing whitespaces from build.xml

* Delete java/lib directory

* Create download-junit-jars.sh

* Update build.xml for downloading junit&mockito jars

* Delete tools/java/java-build/target directory

* Delete tools/java/cpp-build/target directory

* ShortNumberInfo metadata tooling - add missing fields to generated JSON.

Adjust javascript metadata generation tooling to include PhoneMetadata proto fields 29,30,31, and 33 that were previously excluded which are now needed for ShortNumberInfo.

* Add shortnumberinfo metadata to build metadata golden tests.

* Remove inaccurate comments in build tooling

* Add namespace to BuildMetadataJsonFromXml to support tool reuse

* Use updated build tooling to generate short number metadata file

* update phonemetadata.pb.js to match the current proto definition

* remove field 7 from phonemetadata.pb.js

* Update build tool to correctly namespacee the generated metadata files

* Stop field 32 from being populated as it is not used in the APIs

* remove metadata accessors for field 32.

* Add tests for connectsToEmergenyNumber and isEmergencyNumber.

Updated linter to include shortnumberinfo related files, and fixed some
lint issues existing with PhoneNumberUtil files.

* ShortNumberInfo functionality and tests ported. Unformatted and missing jsdoc

* Added comments, and fixed as many lint issues as possible.

* lint and comment review comments from andyst addressed.

* Add a golden metadata build test for short number metadata.

* Revert changes to the original phone metadata golden tests.

* Fix a lot of linting and jsdoc typing errors caught by the compiler.

* Add ShortNumberInfo to the javascript demo pages.

* Add ShortNumberIInfo porting to pending_code_changes.

* Add constants to golden tests.

* Update the build tooling

* uUdate pending changes to differentiate build and code changes

* Update build file, fix small test closure compilation issues

* Regenerate short number metadata to account for metadata updates between original generation and now.

* Move requires to alphabetical order

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.

... with per-region files' prefix; see:
- https://github.com/googlei18n/libphonenumber/blob/master/java/libphonenumber/src/com/google/i18n/phonenumbers/MultiFileMetadataSourceImpl.java
- https://github.com/googlei18n/libphonenumber/blob/master/java/libphonenumber/test/com/google/i18n/phonenumbers/TestMetadataTestCase.java

files and carrier mapping files.

Review URL: https://codereview.appspot.com/6345053

Review URL: https://codereview.appspot.com/6353060

Review URL: https://codereview.appspot.com/6351054

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

PhoneNumberUtil.resetInstance() should always be used instead. This omission should not be hidden by unit tests that fork.

That also makes the external version consistent with the internal one in which unit tests don't seem to be executed by default in isolated processes.

Review URL: http://codereview.appspot.com/5341042