revert _intl change

Author: andrewseguin

src/lib/sort/sort-header.html

@@ -1,7 +1,7 @@
 <div class="mat-sort-header-container"
      [class.mat-sort-header-position-before]="arrowPosition == 'before'">
   <button class="mat-sort-header-button" type="button"
-          [attr.aria-label]="intl.sortButtonLabel(id)">
+          [attr.aria-label]="_intl.sortButtonLabel(id)">
     <ng-content></ng-content>
   </button>
 
@@ -12,4 +12,4 @@
     <div class="mat-sort-header-pointer-left"></div>
     <div class="mat-sort-header-pointer-right"></div>
   </div>
-</div>
+</div>

src/lib/sort/sort-header.ts

@@ -84,7 +84,7 @@ export class MdSortHeader implements MdSortable {
   get _id() { return this.id; }
   set _id(v: string) { this.id = v; }
 
-  constructor(public intl: MdSortHeaderIntl,
+  constructor(public _intl: MdSortHeaderIntl,
               changeDetectorRef: ChangeDetectorRef,
               private _elementRef: ElementRef,
               @Optional() public _sort: MdSort,
@@ -93,7 +93,7 @@ export class MdSortHeader implements MdSortable {
       throw getMdSortHeaderNotContainedWithinMdSortError();
     }
 
-    this._rerenderSubscription = merge(_sort.mdSortChange, intl.changes).subscribe(() => {
+    this._rerenderSubscription = merge(_sort.mdSortChange, _intl.changes).subscribe(() => {
       changeDetectorRef.markForCheck();
     });
   }
@@ -117,7 +117,7 @@ export class MdSortHeader implements MdSortable {
   }
 
   /**
-   * Returns the aria-sort attribute that should be applied to this sort header. If this header
+   * Gets the aria-sort attribute that should be applied to this sort header. If this header
    * is not sorted, returns null so that the attribute is removed from the host element. Aria spec
    * says that the aria-sort property should only be present on one header at a time, so removing
    * ensures this is true.