[plt-scheme] Multiple file syntactic test suite coverage

I really like DrScheme's "syntactic test suite coverage" feature.  As
far as I know (I'm using 4.1.1.1-svn11oct2008), it does not work across
multiple files.  I'd like to request it be made to work across multiple
files, similar to what the debugger does of asking if it should include
files that are open.  I'd especially like this so I can run my unit test
programs and see what they've covered in the module they test.  I
imagine other people would find this useful as well.

Thanks for considering,

-- 
: Derick
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