Add support for Result_Stream branch of Test::Builder

This is the only thing that NEEDS to change to make Test::Most work with
the new Test::Builder/Test::More changes in Result_Stream.

Ultimately some other chnages may be a good idea/helpful, but because of
backwards compatability support they are not strictly necessary.
Fix TODO exporting with newer TBs
Merge pull request #9 from exodist/master

Add support for Result_Stream branch of Test::Builder