Minor changes to the native array construct code
Minor changes to the native array construct code

Named a constant and added an assert to get notified when related constants
change.

Removed reloading of the Array function when Array is called as a constructor as
the Array function is preserved in edi.

This - unlike r2908 and r2909 - both compiles and passes the tests.
Review URL: http://codereview.chromium.org/209012

git-svn-id: b158db1e4b4ab85d4c9e510fdef4b1e8c614b15b@2940 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh