Declare FFI\CType in namespace

Now that it is supported, declare that CType is part of the FFI
namespace, not a freestanding class.

Author: nikic

ext/ffi/ffi.stub.php

@@ -2,6 +2,8 @@
 
 /** @generate-function-entries */
 
+namespace {
+
 final class FFI
 {
     public static function cdef(string $code = "", ?string $lib = null): FFI {}
@@ -62,6 +64,12 @@ public static function string(FFI\CData $ptr, ?int $size = null): ?string {}
     public static function isNull(FFI\CData $ptr): bool {}
 }
 
+}
+
+namespace FFI {
+
 final class CType {
     public function getName() : string {}
 }
+
+}

ext/ffi/ffi_arginfo.h

@@ -1,5 +1,5 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: cf08aabbc0e1c50204772ace9285f1c5ef7a22fe */
+ * Stub hash: 63219df3f7ccf823350d288bf2dfeba5291a3e51 */
 
 ZEND_BEGIN_ARG_WITH_RETURN_OBJ_INFO_EX(arginfo_class_FFI_cdef, 0, 0, FFI, 0)
 	ZEND_ARG_TYPE_INFO_WITH_DEFAULT_VALUE(0, code, IS_STRING, 0, "\"\"")