[TxMt] XCode bundle

[Chris Thomas]

> The script uses {#file}. I replaced that with {#escaped_file} and it  
> launchs the terminal window

Thanks for the report; broken in my checkins to add console output.  
Now fixed.


> But then I get an error that reports that it can't find the build.  
> It's looking in a Release directory, but my build is a Debug build.

This should actually work if it did in the past, since that section of  
the code hasn't really changed. It does work here.

The point of failure is in Xcode::Project#active_configuration_name;  
I'll try to look at this more later tonight. (If we can't find a user- 
specified configuration, we use 'Release' -- even if there isn't a  
'Release' target. We should at least default to a target known to  
exist in the project file.)

Chris