MFC r226785:

MFC r226785:

  Attempt to fix build logic for gensnmptree.

  There are two problems with the existing logic. It builds gensnmptree
  on <700018, even if WITHOUT_BSNMP is set, but more importantly, we must
  not forget to build gensnmptree on systems that have originally been
  built without. This causes a buildworld on those systems to fail.

git-svn-id: svn://svn.freebsd.org/base/stable/9@230951 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f