Rename analyzer_experimental to analyzer.

pkg/analyzer/lib/src/generated/constant.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.constant;
 import 'java_core.dart';
 import 'source.dart' show Source;
 import 'error.dart' show AnalysisError, ErrorCode, CompileTimeErrorCode;
 import 'scanner.dart' show TokenType;
 import 'ast.dart';
 import 'element.dart';
 import 'engine.dart' show AnalysisEngine;
@@ skipping 1739 matching lines @@
   ValidResult valueOf3(double value) => new ValidResult(value);
 
   /**
    * Return a result object representing the given value.
    *
    * @param value the value to be represented as a result object
    * @return a result object representing the given value
    */
   ValidResult valueOf4(String value) => new ValidResult(value);
 }