Files added to src/unfinished/

[Brian Rice]

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I've added various incomplete local files that I had to src/ 
unfinished/. Patches to them are welcome.

I also moved the longstanding incomplete cc.slate and regex.slate to  
unfinished so that there is no/less confusion about their status.

- --
- -Brian
http://tunes.org/~water/brice.vcf

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