some fixes and cleanup:
-replace a struct member name "private" in a public header, it is
reserved in C+, fixes build problems reported by joerg and wiz
-link against librt on Linux (needed for clock_gettime()), should
fix build problem reported by dsainty
-don't even compile cooked_interface.c on NetBSD, and g/c patches
which added NetBSD support code which was never used
bump PKGREVISION

(drochner)