Keeping both tmpnam and tempname?

[Rik]

Should Octave continue to keep both tmpnam and tempname in the global
function namespace?  tempname is the function name that Matlab uses. 
tmpnam is the C function name for the same behavior.  We have both and one
is just an alias for the other.  It seems like we could unclutter things a
bit by agreeing to just keep the Matlab compatibile name "tempname".

--Rik