refactor(compiler): cleanup and preparation for integration

- Rename `DirectiveMetadata` into `CompileDirectiveMetadata`, merge
  with `NormalizedDirectiveMetadata` and remove `ChangeDetectionMetadata`
- Store change detector factories not as array but
  directly at the `CompiledTemplate` or the embedded template
  to make instantiation easier later on
- Already analyze variable values and map them
  to `Directive.exportAs`
- Keep the directive sort order as specified in the
  `@View()` annotation
- Allow to clear the runtime cache in `StyleCompiler`
  and `TemplateCompiler`
- Ignore `script` elements to match the semantics of the
  current compiler
- Make all components dynamically loadable and remove
  the previously introduced property `@Component#dynamicLoadable`
  for now until we find a better option to configure this
- Don’t allow to specify bindings in `@View#directives` and `@View#pipes` as this was never supported by the transformer (see below for the breaking change)

BREAKING CHANGE:
- don't support DI bindings in `@View#directives` and `@View@pipes` any more in preparation of integrating the new compiler. Use `@Directive#bindings` to reexport directives under a different token instead.

Part of #3605
Closes #4314

modules/angular2/src/core/change_detection/change_detection.ts

@@ -42,7 +42,7 @@ export {
   DebugContext,
   ChangeDetectorGenConfig
 } from './interfaces';
-export {ChangeDetectionStrategy, changeDetectionStrategyFromJson} from './constants';
+export {ChangeDetectionStrategy, CHANGE_DECTION_STRATEGY_VALUES} from './constants';
 export {DynamicProtoChangeDetector} from './proto_change_detector';
 export {BindingRecord, BindingTarget} from './binding_record';
 export {DirectiveIndex, DirectiveRecord} from './directive_record';

modules/angular2/src/core/change_detection/constants.ts

@@ -1,11 +1,4 @@
-import {
-  StringWrapper,
-  normalizeBool,
-  isBlank,
-  serializeEnum,
-  deserializeEnum
-} from 'angular2/src/core/facade/lang';
-import {MapWrapper} from 'angular2/src/core/facade/collection';
+import {StringWrapper, normalizeBool, isBlank} from 'angular2/src/core/facade/lang';
 
 export enum ChangeDetectionStrategy {
   /**
@@ -48,19 +41,15 @@ export enum ChangeDetectionStrategy {
   OnPushObserve
 }
 
-var strategyMap: Map<number, ChangeDetectionStrategy> = MapWrapper.createFromPairs([
-  [0, ChangeDetectionStrategy.CheckOnce],
-  [1, ChangeDetectionStrategy.Checked],
-  [2, ChangeDetectionStrategy.CheckAlways],
-  [3, ChangeDetectionStrategy.Detached],
-  [4, ChangeDetectionStrategy.OnPush],
-  [5, ChangeDetectionStrategy.Default],
-  [6, ChangeDetectionStrategy.OnPushObserve]
-]);
-
-export function changeDetectionStrategyFromJson(value: number): ChangeDetectionStrategy {
-  return deserializeEnum(value, strategyMap);
-}
+export var CHANGE_DECTION_STRATEGY_VALUES = [
+  ChangeDetectionStrategy.CheckOnce,
+  ChangeDetectionStrategy.Checked,
+  ChangeDetectionStrategy.CheckAlways,
+  ChangeDetectionStrategy.Detached,
+  ChangeDetectionStrategy.OnPush,
+  ChangeDetectionStrategy.Default,
+  ChangeDetectionStrategy.OnPushObserve
+];
 
 export function isDefaultChangeDetectionStrategy(changeDetectionStrategy: ChangeDetectionStrategy):
     boolean {