[GRASS5] rename d.paint.labels to d.labels

[Hamish]

I'd like to rename the d.paint.labels modules to d.labels. *.paint no
longer exists anywhere else and it's confusing.

Plan: (For GRASS 6.1),
 we'd keep the CVS directory structure as-is,
 change the module's build name in the Makefile,
 but how to make a symlink to old d.paint.labels in the Makefile to
  keep backward compatibility? man pages too?

Or for display modules don't be as strict with backwards compatibility
and don't worry about symlink to new name?


Hamish