feat(transformers): implement initializing deferred libraries

Implement deferred libraries to work with dependency injection and other
angular codegen. This is done by not initializing the library in the parent
ng_deps file when it is declared as deferred, rewriting the import and,
chaining a future that initializes the library in any files that are using
deferred libraries which need angular codegen.

modules/angular2/test/transform/directive_processor/absolute_url_expression_files/expected/hello.ng_deps.dart

@@ -1,6 +1,7 @@
 library examples.src.hello_world.absolute_url_expression_files.ng_deps.dart;
 
 import 'hello.dart';
+export 'hello.dart';
 import 'package:angular2/src/reflection/reflection.dart' as _ngRef;
 import 'package:angular2/angular2.dart'
     show bootstrap, Component, Directive, View, NgElement;

modules/angular2/test/transform/directive_processor/custom_metadata/expected/package_soup.ng_deps.dart

@@ -1,6 +1,7 @@
 library dinner.package_soup.ng_deps.dart;
 
 import 'package_soup.dart';
+export 'package_soup.dart';
 import 'package:angular2/src/reflection/reflection.dart' as _ngRef;
 import 'package:soup/soup.dart';
 

modules/angular2/test/transform/directive_processor/custom_metadata/expected/relative_soup.ng_deps.dart

@@ -1,6 +1,7 @@
 library dinner.relative_soup.ng_deps.dart;
 
 import 'relative_soup.dart';
+export 'relative_soup.dart';
 import 'package:angular2/src/reflection/reflection.dart' as _ngRef;
 import 'annotations/soup.dart';
 

modules/angular2/test/transform/directive_processor/expected/hello.ng_deps.dart

@@ -1,6 +1,7 @@
 library examples.src.hello_world.index_common_dart.ng_deps.dart;
 
 import 'hello.dart';
+export 'hello.dart';
 import 'package:angular2/src/reflection/reflection.dart' as _ngRef;
 import 'package:angular2/angular2.dart'
     show bootstrap, Component, Directive, View, NgElement;

modules/angular2/test/transform/directive_processor/interface_chain_files/expected/soup.ng_deps.dart

@@ -1,6 +1,7 @@
 library dinner.soup.ng_deps.dart;
 
 import 'soup.dart';
+export 'soup.dart';
 import 'package:angular2/src/reflection/reflection.dart' as _ngRef;
 import 'package:angular2/src/core/annotations_impl/annotations.dart';
 

modules/angular2/test/transform/directive_processor/interfaces_files/expected/soup.ng_deps.dart

@@ -1,6 +1,7 @@
 library dinner.soup.ng_deps.dart;
 
 import 'soup.dart';
+export 'soup.dart';
 import 'package:angular2/src/reflection/reflection.dart' as _ngRef;
 import 'package:angular2/src/core/annotations_impl/annotations.dart';
 

modules/angular2/test/transform/directive_processor/invalid_url_files/expected/hello.ng_deps.dart

@@ -1,6 +1,7 @@
 library test.transform.directive_processor.invalid_url_files.hello.ng_deps.dart;
 
 import 'hello.dart';
+export 'hello.dart';
 import 'package:angular2/src/reflection/reflection.dart' as _ngRef;
 import 'package:angular2/angular2.dart'
     show bootstrap, Component, Directive, View, NgElement;

modules/angular2/test/transform/directive_processor/multiple_style_urls_files/expected/hello.ng_deps.dart

@@ -1,6 +1,7 @@
 library examples.src.hello_world.multiple_style_urls_files.ng_deps.dart;
 
 import 'hello.dart';
+export 'hello.dart';
 import 'package:angular2/src/reflection/reflection.dart' as _ngRef;
 import 'package:angular2/angular2.dart'
     show bootstrap, Component, Directive, View, NgElement;

modules/angular2/test/transform/directive_processor/multiple_style_urls_not_inlined_files/expected/hello.ng_deps.dart

@@ -1,6 +1,7 @@
 library examples.src.hello_world.multiple_style_urls_not_inlined_files.ng_deps.dart;
 
 import 'hello.dart';
+export 'hello.dart';
 import 'package:angular2/src/reflection/reflection.dart' as _ngRef;
 import 'package:angular2/angular2.dart'
     show bootstrap, Component, Directive, View, NgElement;

modules/angular2/test/transform/directive_processor/parameter_metadata/expected/soup.ng_deps.dart

@@ -1,6 +1,7 @@
 library dinner.soup.ng_deps.dart;
 
 import 'soup.dart';
+export 'soup.dart';
 import 'package:angular2/src/reflection/reflection.dart' as _ngRef;
 import 'package:angular2/src/core/annotations_impl/annotations.dart';
 

modules/angular2/test/transform/directive_processor/split_url_expression_files/expected/hello.ng_deps.dart

@@ -1,6 +1,7 @@
 library examples.src.hello_world.split_url_expression_files.ng_deps.dart;
 
 import 'hello.dart';
+export 'hello.dart';
 import 'package:angular2/src/reflection/reflection.dart' as _ngRef;
 import 'package:angular2/angular2.dart'
     show bootstrap, Component, Directive, View, NgElement;

modules/angular2/test/transform/directive_processor/static_function_files/expected/hello.ng_deps.dart

@@ -1,6 +1,7 @@
 library static_function_files.hello.ng_deps.dart;
 
 import 'hello.dart';
+export 'hello.dart';
 import 'package:angular2/src/reflection/reflection.dart' as _ngRef;
 import 'package:angular2/angular2.dart';
 

modules/angular2/test/transform/directive_processor/superclass_files/expected/soup.ng_deps.dart

@@ -1,6 +1,7 @@
 library dinner.soup.ng_deps.dart;
 
 import 'soup.dart';
+export 'soup.dart';
 import 'package:angular2/src/reflection/reflection.dart' as _ngRef;
 import 'package:angular2/src/core/annotations_impl/annotations.dart';
 

modules/angular2/test/transform/directive_processor/url_expression_files/expected/hello.ng_deps.dart

@@ -1,6 +1,7 @@
 library examples.src.hello_world.url_expression_files.ng_deps.dart;
 
 import 'hello.dart';
+export 'hello.dart';
 import 'package:angular2/src/reflection/reflection.dart' as _ngRef;
 import 'package:angular2/angular2.dart'
     show bootstrap, Component, Directive, View, NgElement;