Change core lib, dart2js, and more for new optional parameters syntax

lib/_internal/libraries.dart

Index: lib/_internal/libraries.dart
===================================================================
--- lib/_internal/libraries.dart	(revision 13683)
+++ lib/_internal/libraries.dart	(working copy)
@@ -140,13 +140,13 @@
    */
   final bool implementation;
 
-  const LibraryInfo(this.path, [
-           this.category = "Shared",
-           this.dart2jsPath,
-           this.dart2jsPatchPath,
-           this.implementation = false,
-           this.documented = true,
-           this.platforms = DART2JS_PLATFORM | VM_PLATFORM]);
+  const LibraryInfo(this.path, {
+                    this.category: "Shared",
+                    this.dart2jsPath,
+                    this.dart2jsPatchPath,
+                    this.implementation: false,
+                    this.documented: true,
+                    this.platforms: DART2JS_PLATFORM | VM_PLATFORM});
 
   bool get isDart2jsLibrary => (platforms & DART2JS_PLATFORM) != 0;
   bool get isVmLibrary => (platforms & VM_PLATFORM) != 0;