Both CVS and Perforce are used by fraction of users, of those a fraction requires the git-to-X bridge. The majority of users don't need those options. Please consider to remove them from OPTIONS_DEFAULT. SUBVERSION isn't either in OPTIONS_DEFAULT.
It's going to be fixed when we get https://reviews.freebsd.org/D32369 in
cvs, p4 and svn are now subpackages
(In reply to Renato Botelho from comment #2) Muito obrigado!