node-webkit issue #199 - for native modules renaming nw.exe breaks

Hi

when using native modules on windows renaming nw.exe into smth different causes wird behaviour ("Error no error") as described in https://github.com/rogerwang/node-webkit/issues/199. So I updated build script to reflect that - you can check if beahiour is the same by downloading my maracuya-project package: http://maracuya-jukebox.com/download/maracuya.zip. 

Probably it would be better to add some kind of flag whether renaming should be enabled or not and what are the consequences.

Thanks
Marek