Making mergemaster skip certain files

[J. Porter Clark]

Is there any way to keep certain files out of the reach of
mergemaster?  I understand the need for carefully merging the
old and the new, but I really shouldn't ever have to for files
like these:

  /etc/aliases
  /etc/hosts
  /etc/hosts.allow
  /etc/manpath.config
  ... and many others.

Mergemaster has so many options that I'm fairly certain that
there must be some way to do this.

-- 
J. Porter Clark      <jpc at porterclark.com>