Dash in octave-prefs filename

[John W. Eaton]

On  5-Nov-2011, Rik wrote:

| Would it be okay to change the filename for octave preferences to
| '.octave_prefs'?  This would be consistent with .octave_hist and
| .octave_packages.

I like dashes in filenames rather than underscores.  It would be OK to
be consistent, but what will we have to do to not break things for
people who are currently using the old name?  How long do we have to
keep the code that looks for both names?

| In addition, it gets away from using the dash which is
| used for input option processing on most UNIX commands.

Is there some way that causes trouble?

jwe