Optimize _.max and _.min.

Former-commit-id: 8c5dc8606d00e68dee63f06438e83c3bd65f3b29

build.js

@@ -118,10 +118,10 @@
     'lastIndexOf': [],
     'lateBind': ['isFunction'],
     'map': ['forEach', 'isArray'],
-    'max': ['forEach'],
+    'max': ['forEach', 'isArray'],
     'memoize': [],
     'merge': ['forOwn', 'isArray', 'isPlainObject'],
-    'min': ['forEach'],
+    'min': ['forEach', 'isArray'],
     'mixin': ['forEach', 'functions'],
     'noConflict': [],
     'object': [],