Guard out use of pthreads in hash and list and don't build the thread queue when pthreads is not available.
Also make cfu.h not generated. Need to fix the @VERSION@ replacement it was using in a future commit, for now it's just hardcoded.
All of the files from the tarball downloaded from SourceForge are being checked in so there's a record of the changes made compared to it (since I can't find the libcfu source repository). The generated files will be removed in the following commit.
