Deprecating Octave_map class

[Rik]

6/30/13

John,

I just replaced a few remaining instances of Octave_map (CamelCase) with
octave_map or octave_scalar_map
(http://hg.savannah.gnu.org/hgweb/octave/rev/5e30b1c950b8).  Should we be
deprecating Octave_map class?  Is there a simple way to do this or is a
kluge like putting the GCC_DEPRECATED_ATTR tag on each form of the
constructor the easiest way to proceed?

--Rik