PHP namespaces for nested messages and enums (#4536)

* uses namespaces for nested messages and enums

* fixes namespaces for PHP dist

* fixes namespace for Descriptors, adds Cardinality and Kind

* fixes nested namespaces for reserved words and adds tests

* adds tests and generator fix for php class prefixes

* fixes escaping of protobuf packages, enum comments, misc others

* nice refactor of generated code

* adds class files for backwards compatibility

* simplifies code with templates

* adds compatibility files to makefile

* cleanup of generator and fixes nested namespace bug

* regenerates proto types

* remove internal BC classes

* adds deprecated warning, adds methods back

* simplifies if statement

* fixes dist files

* addresses review comments

* adds back TYPE_URL_PREFIX constant

* adds @deprecated to old nested class files

* skips tests which require a separate process when protobuf.so is enabled

* Adds tests for legacy nested classes that do not require separate processes to test

* uses legacy names for GPBUtil message check

* adds block for IDE @deprecated message

* Namespace for nested message/enum in c extension

* Remove unused code

1 files changed, 0 insertions, 119 deletions

diff --git a/php/src/Google/Protobuf/Internal/DescriptorProto_ReservedRange.php b/php/src/Google/Protobuf/Internal/DescriptorProto_ReservedRange.php
deleted file mode 100644
index 302eaaa9..00000000
--- a/php/src/Google/Protobuf/Internal/DescriptorProto_ReservedRange.php
+++ /dev/null
@@ -1,119 +0,0 @@
-<?php
-# Generated by the protocol buffer compiler.  DO NOT EDIT!
-# source: google/protobuf/descriptor.proto
-
-namespace Google\Protobuf\Internal;
-
-use Google\Protobuf\Internal\GPBType;
-use Google\Protobuf\Internal\GPBWire;
-use Google\Protobuf\Internal\RepeatedField;
-use Google\Protobuf\Internal\InputStream;
-use Google\Protobuf\Internal\GPBUtil;
-
-/**
- * Range of reserved tag numbers. Reserved tag numbers may not be used by
- * fields or extension ranges in the same message. Reserved ranges may
- * not overlap.
- *
- * Generated from protobuf message <code>google.protobuf.DescriptorProto.ReservedRange</code>
- */
-class DescriptorProto_ReservedRange extends \Google\Protobuf\Internal\Message
-{
-    /**
-     * Inclusive.
-     *
-     * Generated from protobuf field <code>optional int32 start = 1;</code>
-     */
-    private $start = 0;
-    private $has_start = false;
-    /**
-     * Exclusive.
-     *
-     * Generated from protobuf field <code>optional int32 end = 2;</code>
-     */
-    private $end = 0;
-    private $has_end = false;
-
-    /**
-     * Constructor.
-     *
-     * @param array $data {
-     *     Optional. Data for populating the Message object.
-     *
-     *     @type int $start
-     *           Inclusive.
-     *     @type int $end
-     *           Exclusive.
-     * }
-     */
-    public function __construct($data = NULL) {
-        \GPBMetadata\Google\Protobuf\Internal\Descriptor::initOnce();
-        parent::__construct($data);
-    }
-
-    /**
-     * Inclusive.
-     *
-     * Generated from protobuf field <code>optional int32 start = 1;</code>
-     * @return int
-     */
-    public function getStart()
-    {
-        return $this->start;
-    }
-
-    /**
-     * Inclusive.
-     *
-     * Generated from protobuf field <code>optional int32 start = 1;</code>
-     * @param int $var
-     * @return $this
-     */
-    public function setStart($var)
-    {
-        GPBUtil::checkInt32($var);
-        $this->start = $var;
-        $this->has_start = true;
-
-        return $this;
-    }
-
-    public function hasStart()
-    {
-        return $this->has_start;
-    }
-
-    /**
-     * Exclusive.
-     *
-     * Generated from protobuf field <code>optional int32 end = 2;</code>
-     * @return int
-     */
-    public function getEnd()
-    {
-        return $this->end;
-    }
-
-    /**
-     * Exclusive.
-     *
-     * Generated from protobuf field <code>optional int32 end = 2;</code>
-     * @param int $var
-     * @return $this
-     */
-    public function setEnd($var)
-    {
-        GPBUtil::checkInt32($var);
-        $this->end = $var;
-        $this->has_end = true;
-
-        return $this;
-    }
-
-    public function hasEnd()
-    {
-        return $this->has_end;
-    }
-
-}
-