support --argumentfile and stdin for arguments, like pybot

[GoogleCodeExporter]

It would be nice if maybot supported the --argumentfile option, and the ability 
to pass arguments on stding like pybot. If it did this, it would be possible to 
launch mabot from within the test runner plugin in RIDE. 

Presently the test runner uses --argument file, but now that pybot supports 
options on stdin I hope that the plugin uses that so it can avoid creating 
temporary files on disk (see robot framework issue 773: 
http://code.google.com/p/robotframework/issues/detail?id=773)

Original issue reported on code.google.com by [email protected] on 7 Mar 2011 at 8:55