Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

vendor/symfony/dependency-injection/Tests/Fixtures/xml/extensions/services1.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" ?>
+
+<container xmlns="http://symfony.com/schema/dic/services"
+    xmlns:project="http://www.example.com/schema/project">
+
+    <parameters>
+        <parameter key="project.parameter.foo">BAR</parameter>
+    </parameters>
+
+    <services>
+        <service id="project.service.foo" class="BAR" />
+    </services>
+
+    <project:bar babar="babar">
+        <another />
+        <another2>%project.parameter.foo%</another2>
+    </project:bar>
+
+</container>

vendor/symfony/dependency-injection/Tests/Fixtures/xml/extensions/services2.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" ?>
+
+<container xmlns="http://symfony.com/schema/dic/services"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xmlns:project="http://www.example.com/schema/projectwithxsd"
+    xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd
+                        http://www.example.com/schema/projectwithxsd http://www.example.com/schema/projectwithxsd/project-1.0.xsd">
+
+    <parameters>
+        <parameter key="project.parameter.foo">BAR</parameter>
+    </parameters>
+
+    <services>
+        <service id="project.service.foo" class="BAR" />
+    </services>
+
+    <project:bar />
+
+</container>

vendor/symfony/dependency-injection/Tests/Fixtures/xml/extensions/services3.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" ?>
+
+<container xmlns="http://symfony.com/schema/dic/services"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xmlns:project="http://www.example.com/schema/projectwithxsd"
+    xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd
+                        http://www.example.com/schema/projectwithxsd http://www.example.com/schema/projectwithxsd/project-1.0.xsd">
+
+    <parameters>
+        <parameter key="project.parameter.foo">BAR</parameter>
+    </parameters>
+
+    <services>
+        <service id="project.service.foo" class="BAR" />
+    </services>
+
+    <project:bar bar="bar" />
+
+</container>

vendor/symfony/dependency-injection/Tests/Fixtures/xml/extensions/services4.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" ?>
+
+<container xmlns="http://symfony.com/schema/dic/services"
+    xmlns:project="http://www.example.com/schema/not_registered_extension">
+  <project:bar />
+</container>

vendor/symfony/dependency-injection/Tests/Fixtures/xml/extensions/services5.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" ?>
+
+<container xmlns="http://symfony.com/schema/dic/services"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xmlns:project="http://www.example.com/schema/projectwithxsd"
+    xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd
+                        http://www.example.com/schema/projectwithxsd http://www.example.com/schema/projectwithxsd/project-1.0.xsd">
+
+    <project:foobar />
+
+</container>

vendor/symfony/dependency-injection/Tests/Fixtures/xml/extensions/services6.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" ?>
+
+<container xmlns="http://symfony.com/schema/dic/services"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xmlns:project="http://www.example.com/schema/projectwithxsdinphar"
+    xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd
+                        http://www.example.com/schema/projectwithxsdinphar http://www.example.com/schema/projectwithxsdinphar/project-1.0.xsd">
+
+    <project:bar />
+
+</container>

vendor/symfony/dependency-injection/Tests/Fixtures/xml/extensions/services7.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" ?>
+
+<container xmlns="http://symfony.com/schema/dic/services"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xmlns:project="http://www.example.com/schema/projectwithxsdinphar"
+    xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd
+                        http://www.example.com/schema/projectwithxsdinphar http://www.example.com/schema/projectwithxsdinphar/project-1.0.xsd">
+
+    <project:bar bar="foo" />
+
+</container>