Temporarily _disable_ compilation of dpv(3) and dpv(1).
Will revisit this to find out how to solve the ordering
issue in buildworld (potentially `make -j' specific).

Reviewed by:	shurd


git-svn-id: svn+ssh://svn.freebsd.org/base/head@274124 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f