perf($compile): update one-way bindings to no longer use deepWatch for literals

BREAKING CHANGE:
Previously when a literal value was passed into a directive/component via
one-way binding it would be watched with a deep watcher.

For example, for `<my-component input="[a]">`, a new instance of the array
would be passed into the directive/component (and trigger $onChanges) not
only if `a` changed but also if any sub property of `a` changed such as
`a.b` or `a.b.c.d.e` etc.

This also means a new but equal value for `a` would NOT trigger such a
change.

Now literal values use a non-deep watch similar to other directive/component
one-way bindings. Changes are only trigger when the value itself changes.

Avoiding deep watchers for array/object literals will improve watcher
performance of all literals passed as one-way bindings, especially those
containing references to large/complex objects.

Author: jbedard

src/ng/compile.js

@@ -3522,7 +3522,7 @@ function $CompileProvider($provide, $$sanitizeUriProvider) {
               }
               recordChanges(scopeName, newValue, oldValue);
               destination[scopeName] = newValue;
-            }, deepWatch);
+            });
 
             removeWatchCollection.push(removeWatch);
             break;

test/ng/compileSpec.js

@@ -5676,7 +5676,7 @@ describe('$compile', function() {
             }));
 
 
-            it('should deep-watch array literals', inject(function() {
+            it('should watch input values to array literals', inject(function() {
               $rootScope.name = 'georgios';
               $rootScope.obj = {name: 'pete'};
               compile('<div><span my-component ow-ref="[{name: name}, obj]">');
@@ -5690,7 +5690,7 @@ describe('$compile', function() {
             }));
 
 
-            it('should deep-watch object literals', inject(function() {
+            it('should watch input values object literals', inject(function() {
               $rootScope.name = 'georgios';
               $rootScope.obj = {name: 'pete'};
               compile('<div><span my-component ow-ref="{name: name, item: obj}">');