On the verify-as-commit branch:

Make the verification logic conditional: specifically, for now, make it enabled
iff built as maintainer mode.

* subversion/libsvn_fs_fs/fs_fs.c
  (verify_as_revision_before_current_plus_plus):
    Short-circuit in maintainer mode.


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/verify-at-commit@1462407 13f79535-47bb-0310-9956-ffa450edef68