* Add descriptors test
* Update descriptors tests
* Add public descriptors
* Add test_desriptors.proto to test script
* Update composer files
* Remove references to GPBType, update tests to be compatible with c
* Update for c extension compatibility
* Remove nested enums for descriptor, update tests
* Strip leading '.' from descriptor name
* Update tests with test for getClass, fix OneofDescriptor
* Add new files to Makefile.am
* Add php_generic_services option
* Generate PHP generic services
* Respect namespaces for generated PHP services
* Test PHP generated services
* Rename PHP generator service method doc comment function
* Correct phpdoc service method case
* Test namespaced PHP generic services
* Always use the FQCN for PHP generic service input/output
* Add generated_service_test to php test.sh
* Add php service test protos to CI
* Add php service files to php_EXTRA_DIST
* Use Interface suffix for php generic services
* adds PHPDoc @return and @param for getters and setters respectively
* addresses changes in PR review
* adds documentation tests
* Update php_generator:
- Prepend \ to names where required
- Remove <pre> tags
- Update protobuf field comments
* Updates class files with the protobuf changes
* Addresses review comments
* removes Protobuf Type line from PHP generated classes
* fixes phpdoc test
* adds array types to phpdoc
