The upstream maintainer and I have worked together to produce a working
version of bittwist for FreeBSD 4, 5, and 6. The attached patch updates
the port to this version. It also removes files/patch-Makefile which
should not have been committed, removes the (now unnecessary) OSVERSION
check for systems that have round(), uses a more proper OSVERSION for
the libpcap check, and lastly it moves to PLIST_FILES.