Merge branch '4.2'

* 4.2:
  fix merge
  [FrameworkBundle] fix xsd
  [FrameworkBundle] update xsd to match the 4.2 configuration
  [FrameworkBundle] Update the xsd to match the actual session configuration
  [Form] CsrfValidationListener marks the token as invalid if it is not a string
  [Routing] fix perf issue when dumping large number of routes
  Fix wrong value in file id attribute for Xliff 2.0
  [VarDumper] Fixed phpDoc
  [PhpUnitBridge] fix PHP  5.3 compat
  [Messenger] Fix DataCollector template
  [Filesystem] Fixed some docblocks and typos
  bumped Symfony version to 4.2.4
  updated VERSION for 4.2.3
  updated CHANGELOG for 4.2.3
  bumped Symfony version to 3.4.23
  updated VERSION for 3.4.22
  update CONTRIBUTORS for 3.4.22
  updated CHANGELOG for 3.4.22
  fix some minor typos
  do not overwrite the constraint being evaluated

Resources/config/schema/symfony-1.0.xsd

@@ -35,7 +35,6 @@
         </xsd:choice>
 
         <xsd:attribute name="http-method-override" type="xsd:boolean" />
-        <xsd:attribute name="trusted-proxies" type="xsd:string" />
         <xsd:attribute name="ide" type="xsd:string" />
         <xsd:attribute name="secret" type="xsd:string" />
         <xsd:attribute name="default-locale" type="xsd:string" />
@@ -76,10 +75,6 @@
     </xsd:complexType>
 
     <xsd:complexType name="profiler">
-        <xsd:all>
-            <xsd:element name="matcher" type="profiler_matcher" minOccurs="0" maxOccurs="1" />
-        </xsd:all>
-
         <xsd:attribute name="collect" type="xsd:string" />
         <xsd:attribute name="only-exceptions" type="xsd:string" />
         <xsd:attribute name="only-master-requests" type="xsd:string" />
@@ -90,18 +85,13 @@
         <xsd:attribute name="lifetime" type="xsd:string" />
     </xsd:complexType>
 
-    <xsd:complexType name="profiler_matcher">
-        <xsd:attribute name="ip" type="xsd:string" />
-        <xsd:attribute name="path" type="xsd:string" />
-        <xsd:attribute name="service" type="xsd:string" />
-    </xsd:complexType>
-
     <xsd:complexType name="router">
         <xsd:attribute name="resource" type="xsd:string" />
         <xsd:attribute name="type" type="xsd:string" />
         <xsd:attribute name="http-port" type="xsd:string" />
         <xsd:attribute name="https-port" type="xsd:string" />
         <xsd:attribute name="strict-requirements" type="xsd:string" />
+        <xsd:attribute name="utf8" type="xsd:boolean" />
     </xsd:complexType>
 
     <xsd:complexType name="session">
@@ -114,13 +104,14 @@
         <xsd:attribute name="cookie-domain" type="xsd:string" />
         <xsd:attribute name="cookie-secure" type="cookie_secure" />
         <xsd:attribute name="cookie-httponly" type="xsd:boolean" />
+        <xsd:attribute name="cookie-samesite" type="cookie_samesite" />
         <xsd:attribute name="use-cookies" type="xsd:boolean" />
         <xsd:attribute name="cache-limiter" type="xsd:string" />
         <xsd:attribute name="gc-maxlifetime" type="xsd:string" />
         <xsd:attribute name="gc-divisor" type="xsd:string" />
         <xsd:attribute name="gc-probability" type="xsd:string" />
-        <xsd:attribute name="use-strict-mode" type="xsd:boolean" />
         <xsd:attribute name="save-path" type="xsd:string" />
+        <xsd:attribute name="metadata-update-threshold" type="xsd:nonNegativeInteger" />
     </xsd:complexType>
 
     <xsd:complexType name="request">
@@ -238,7 +229,6 @@
             <xsd:element name="mapping" type="file_mapping" />
         </xsd:choice>
         <xsd:attribute name="enabled" type="xsd:boolean" />
-        <xsd:attribute name="cache" type="xsd:string" />
         <xsd:attribute name="enable-annotations" type="xsd:boolean" />
         <xsd:attribute name="name-converter" type="xsd:string" />
         <xsd:attribute name="circular-reference-handler" type="xsd:string" />
@@ -258,6 +248,7 @@
             <xsd:element name="default-psr6-provider" type="xsd:string" minOccurs="0" maxOccurs="1" />
             <xsd:element name="default-redis-provider" type="xsd:string" minOccurs="0" maxOccurs="1" />
             <xsd:element name="default-memcached-provider" type="xsd:string" minOccurs="0" maxOccurs="1" />
+            <xsd:element name="default-pdo-provider" type="xsd:string" minOccurs="0" maxOccurs="1" />
             <xsd:element name="pool" type="cache_pool" minOccurs="0" maxOccurs="unbounded" />
         </xsd:sequence>
 
@@ -352,6 +343,14 @@
         </xsd:restriction>
     </xsd:simpleType>
 
+     <xsd:simpleType name="cookie_samesite">
+        <xsd:restriction base="xsd:string">
+            <xsd:enumeration value="" />
+            <xsd:enumeration value="lax" />
+            <xsd:enumeration value="strict" />
+        </xsd:restriction>
+    </xsd:simpleType>
+
     <xsd:simpleType name="workflow_type">
         <xsd:restriction base="xsd:string">
             <xsd:enumeration value="state_machine" />