Rename analyzer_experimental to analyzer.

pkg/analyzer/lib/src/generated/error.dart

 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 library engine.error;
 import 'java_core.dart';
 import 'source.dart';
 import 'ast.dart' show ASTNode;
 import 'scanner.dart' show Token;
 /**
  * Instances of the enumeration `ErrorSeverity` represent the severity of an [ErrorCode]
  * .
@@ skipping 3418 matching lines @@
    */
   StaticTypeWarningCode.con2(String name, int ordinal, String message, String correction) : super(name, ordinal) {
     this._message = message;
     this.correction6 = correction;
   }
   String get correction => correction6;
   ErrorSeverity get errorSeverity => ErrorType.STATIC_TYPE_WARNING.severity;
   String get message => _message;
   ErrorType get type => ErrorType.STATIC_TYPE_WARNING;
 }