Read System Arguments after .reviewboardrc

In my repositories I have added functionality to .reviewboardrc to allow for a command prompt menu instead of having a long list of parameters each time you commit.  This worked well with post-review but since we upgraded to rbt post we encountered some issues.  The way it works is we inject systems argument after asking a few basic questions (summary, description, and group of reviewers).  I propose to reload the system arguments after the reviewboardrc allowing more flexibility to what people can add in .reviewboardrc after the file has been read/executed instead of just passing the argv.