Revert "feat(Compiler): case sensitive html parser"

This reverts commit 86aeb8be0a.

modules/angular2/test/core/linker/integration_spec.ts

@@ -577,10 +577,11 @@ export function main() {
            inject(
                [TestComponentBuilder, AsyncTestCompleter],
                (tcb: TestComponentBuilder, async) => {
-                   tcb.overrideView(MyComp, new ViewMetadata({
-                                      template: '<p><child-cmp var-alice/><child-cmp var-bob/></p>',
-                                      directives: [ChildComp]
-                                    }))
+                   tcb.overrideView(
+                          MyComp, new ViewMetadata({
+                            template: '<p><child-cmp var-alice></child-cmp><child-cmp var-bob></p>',
+                            directives: [ChildComp]
+                          }))
 
                        .createAsync(MyComp)
                        .then((fixture) => {
@@ -1313,7 +1314,7 @@ export function main() {
            tcb =
                tcb.overrideView(MyComp, new ViewMetadata({
                                   directives: [DirectiveThrowingAnError],
-                                  template: `<directive-throwing-error></directive-throwing-error>`
+                                  template: `<directive-throwing-error></<directive-throwing-error>`
                                 }));
 
            PromiseWrapper.catchError(tcb.createAsync(MyComp), (e) => {