It looks like you got some dependency issues. Try to comment out the repo in sources.list and run:
By the looks of it, it is Compiz stuff that no longer is needed, while I have never used AWN, I am not sure how those repos work, but I thought Compiz was essential for AWN to work?
And for the compiling issues you had, try to install build-essentials:
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sudo aptitude install build-essentials
And try ./configure again.