Allow to enter arguments in file open dialog

[10110111]

OllyDbg seems to do a hack on Win32 open file dialog, appending two dropboxes and a button. They look ugly, but still do provide the functionality to allow to:

1. Enter program parameters
2. Set working directory

EDB should provide this functionality too, and not forget to save the parameters to recent file list.

[10110111]

Mostly done upstream, but recent file list still lacks parameters.