cleanup(core): stop reexporting angular2/common from angular2/core

All common directives, forms, and pipes have been moved out of angular2/core,
but we kept reexporting them to make transition easier.

This commit removes the reexports.

BREAKING CHANGE

Before

import {NgIf} from 'angular2/core';

After

import {NgIf} from 'angular2/common';

Closes #5362

modules/angular2/src/common/forms/directives/checkbox_value_accessor.ts

@@ -1,7 +1,4 @@
-import {Directive} from 'angular2/src/core/metadata';
-import {Renderer} from 'angular2/src/core/render';
-import {ElementRef} from 'angular2/src/core/linker';
-import {Self, forwardRef, Provider} from 'angular2/src/core/di';
+import {Directive, Renderer, ElementRef, Self, forwardRef, Provider} from 'angular2/core';
 
 import {NG_VALUE_ACCESSOR, ControlValueAccessor} from './control_value_accessor';
 import {CONST_EXPR} from 'angular2/src/facade/lang';

modules/angular2/src/common/forms/directives/control_value_accessor.ts

@@ -1,5 +1,5 @@
+import {OpaqueToken} from 'angular2/core';
 import {CONST_EXPR} from 'angular2/src/facade/lang';
-import {OpaqueToken} from 'angular2/src/core/di';
 
 /**
  * A bridge between a control and a native element.

modules/angular2/src/common/forms/directives/default_value_accessor.ts

@@ -1,7 +1,4 @@
-import {Directive} from 'angular2/src/core/metadata';
-import {ElementRef} from 'angular2/src/core/linker';
-import {Renderer} from 'angular2/src/core/render';
-import {Self, forwardRef, Provider} from 'angular2/src/core/di';
+import {Directive, ElementRef, Renderer, Self, forwardRef, Provider} from 'angular2/core';
 import {NG_VALUE_ACCESSOR, ControlValueAccessor} from './control_value_accessor';
 import {isBlank, CONST_EXPR} from 'angular2/src/facade/lang';
 

modules/angular2/src/common/forms/directives/ng_control_group.ts

@@ -1,7 +1,14 @@
-import {OnInit, OnDestroy} from 'angular2/lifecycle_hooks';
-import {Directive} from 'angular2/src/core/metadata';
-import {Optional, Inject, Host, SkipSelf, forwardRef, Provider} from 'angular2/src/core/di';
-import {ListWrapper} from 'angular2/src/facade/collection';
+import {
+  OnInit,
+  OnDestroy,
+  Directive,
+  Optional,
+  Inject,
+  Host,
+  SkipSelf,
+  forwardRef,
+  Provider
+} from 'angular2/core';
 import {CONST_EXPR} from 'angular2/src/facade/lang';
 
 import {ControlContainer} from './control_container';

modules/angular2/src/common/forms/directives/ng_control_name.ts

@@ -1,9 +1,19 @@
 import {CONST_EXPR} from 'angular2/src/facade/lang';
 import {EventEmitter, ObservableWrapper} from 'angular2/src/facade/async';
-import {OnChanges, OnDestroy} from 'angular2/lifecycle_hooks';
-import {SimpleChange} from 'angular2/src/core/change_detection';
-import {Query, Directive} from 'angular2/src/core/metadata';
-import {forwardRef, Host, SkipSelf, Provider, Inject, Optional} from 'angular2/src/core/di';
+
+import {
+  OnChanges,
+  OnDestroy,
+  SimpleChange,
+  Query,
+  Directive,
+  forwardRef,
+  Host,
+  SkipSelf,
+  Provider,
+  Inject,
+  Optional
+} from 'angular2/core';
 
 import {ControlContainer} from './control_container';
 import {NgControl} from './ng_control';

modules/angular2/src/common/forms/directives/ng_control_status.ts

@@ -1,5 +1,4 @@
-import {Directive} from 'angular2/src/core/metadata';
-import {Self} from 'angular2/src/core/di';
+import {Directive, Self} from 'angular2/core';
 import {NgControl} from './ng_control';
 import {isBlank, isPresent} from 'angular2/src/facade/lang';
 

modules/angular2/src/common/forms/directives/ng_form.ts

@@ -6,8 +6,7 @@ import {
 } from 'angular2/src/facade/async';
 import {StringMapWrapper, ListWrapper} from 'angular2/src/facade/collection';
 import {isPresent, isBlank, CONST_EXPR} from 'angular2/src/facade/lang';
-import {Directive} from 'angular2/src/core/metadata';
-import {forwardRef, Provider, Optional, Inject} from 'angular2/src/core/di';
+import {Directive, forwardRef, Provider, Optional, Inject} from 'angular2/core';
 import {NgControl} from './ng_control';
 import {Form} from './form_interface';
 import {NgControlGroup} from './ng_control_group';

modules/angular2/src/common/forms/directives/ng_form_control.ts

@@ -1,10 +1,16 @@
 import {CONST_EXPR} from 'angular2/src/facade/lang';
 import {StringMapWrapper} from 'angular2/src/facade/collection';
 import {EventEmitter, ObservableWrapper} from 'angular2/src/facade/async';
-import {OnChanges} from 'angular2/lifecycle_hooks';
-import {SimpleChange} from 'angular2/src/core/change_detection';
-import {Query, Directive} from 'angular2/src/core/metadata';
-import {forwardRef, Provider, Inject, Optional} from 'angular2/src/core/di';
+import {
+  OnChanges,
+  SimpleChange,
+  Query,
+  Directive,
+  forwardRef,
+  Provider,
+  Inject,
+  Optional
+} from 'angular2/core';
 import {NgControl} from './ng_control';
 import {Control} from '../model';
 import {Validators, NG_VALIDATORS, NG_ASYNC_VALIDATORS} from '../validators';

modules/angular2/src/common/forms/directives/ng_form_model.ts

@@ -1,11 +1,15 @@
 import {CONST_EXPR} from 'angular2/src/facade/lang';
 import {ListWrapper, StringMapWrapper} from 'angular2/src/facade/collection';
 import {ObservableWrapper, EventEmitter} from 'angular2/src/facade/async';
-import {SimpleChange} from 'angular2/src/core/change_detection';
-
-import {OnChanges} from 'angular2/lifecycle_hooks';
-import {Directive} from 'angular2/src/core/metadata';
-import {forwardRef, Provider, Inject, Optional} from 'angular2/src/core/di';
+import {
+  SimpleChange,
+  OnChanges,
+  Directive,
+  forwardRef,
+  Provider,
+  Inject,
+  Optional
+} from 'angular2/core';
 import {NgControl} from './ng_control';
 import {NgControlGroup} from './ng_control_group';
 import {ControlContainer} from './control_container';

modules/angular2/src/common/forms/directives/ng_model.ts

@@ -1,9 +1,15 @@
 import {CONST_EXPR} from 'angular2/src/facade/lang';
 import {EventEmitter, ObservableWrapper} from 'angular2/src/facade/async';
-import {OnChanges} from 'angular2/lifecycle_hooks';
-import {SimpleChange} from 'angular2/src/core/change_detection';
-import {Query, Directive} from 'angular2/src/core/metadata';
-import {forwardRef, Provider, Inject, Optional} from 'angular2/src/core/di';
+import {
+  OnChanges,
+  SimpleChange,
+  Query,
+  Directive,
+  forwardRef,
+  Provider,
+  Inject,
+  Optional
+} from 'angular2/core';
 import {ControlValueAccessor, NG_VALUE_ACCESSOR} from './control_value_accessor';
 import {NgControl} from './ng_control';
 import {Control} from '../model';

modules/angular2/src/common/forms/directives/number_value_accessor.ts

@@ -1,7 +1,4 @@
-import {Directive} from 'angular2/src/core/metadata';
-import {ElementRef} from 'angular2/src/core/linker';
-import {Renderer} from 'angular2/src/core/render';
-import {Self, forwardRef, Provider} from 'angular2/src/core/di';
+import {Directive, ElementRef, Renderer, Self, forwardRef, Provider} from 'angular2/core';
 import {NG_VALUE_ACCESSOR, ControlValueAccessor} from './control_value_accessor';
 import {isBlank, CONST_EXPR, NumberWrapper} from 'angular2/src/facade/lang';
 

modules/angular2/src/common/forms/directives/select_control_value_accessor.ts

@@ -1,7 +1,13 @@
-import {Self, forwardRef, Provider} from 'angular2/src/core/di';
-import {Renderer} from 'angular2/src/core/render';
-import {ElementRef, QueryList} from 'angular2/src/core/linker';
-import {Query, Directive} from 'angular2/src/core/metadata';
+import {
+  Query,
+  Directive,
+  Renderer,
+  Self,
+  forwardRef,
+  Provider,
+  ElementRef,
+  QueryList
+} from 'angular2/core';
 
 import {ObservableWrapper} from 'angular2/src/facade/async';
 import {NG_VALUE_ACCESSOR, ControlValueAccessor} from './control_value_accessor';

modules/angular2/src/common/forms/directives/validators.ts

@@ -1,6 +1,5 @@
-import {forwardRef, Provider, OpaqueToken} from 'angular2/src/core/di';
+import {forwardRef, Provider, OpaqueToken, Attribute, Directive} from 'angular2/core';
 import {CONST_EXPR} from 'angular2/src/facade/lang';
-import {Attribute, Directive} from 'angular2/src/core/metadata';
 import {Validators, NG_VALIDATORS} from '../validators';
 import {Control} from '../model';
 import * as modelModule from '../model';

modules/angular2/src/common/forms/form_builder.ts

@@ -1,4 +1,4 @@
-import {Injectable} from 'angular2/src/core/di';
+import {Injectable} from 'angular2/core';
 import {StringMapWrapper} from 'angular2/src/facade/collection';
 import {isPresent, isArray, CONST_EXPR, Type} from 'angular2/src/facade/lang';
 import * as modelModule from './model';

modules/angular2/src/common/forms/validators.ts

@@ -2,7 +2,7 @@ import {isBlank, isPresent, CONST_EXPR} from 'angular2/src/facade/lang';
 import {PromiseWrapper} from 'angular2/src/facade/promise';
 import {ObservableWrapper} from 'angular2/src/facade/async';
 import {ListWrapper, StringMapWrapper} from 'angular2/src/facade/collection';
-import {OpaqueToken} from 'angular2/src/core/di';
+import {OpaqueToken} from 'angular2/core';
 
 import * as modelModule from './model';