Remove compiling from _.invert and shimKeys.

Former-commit-id: 9fc384680960cf45f49f16e4cd84e3dca2b4cf19

build.js

@@ -94,7 +94,7 @@
     'indexOf': ['sortedIndex'],
     'initial': [],
     'intersection': ['indexOf'],
-    'invert': [],
+    'invert': ['forOwn'],
     'invoke': ['forEach'],
     'isArguments': [],
     'isArray': [],
@@ -113,7 +113,7 @@
     'isRegExp': [],
     'isString': [],
     'isUndefined': [],
-    'keys': ['isArguments'],
+    'keys': ['forOwn', 'isArguments'],
     'last': [],
     'lastIndexOf': [],
     'lateBind': ['isFunction'],