Remove module add_utils.py which fully duplicates functions
from trunk's object_utils.py module and switch all dependent
addons to use module from trunk.

- Check for keymap availability to suppress warning messages when running
  blender in background mode

- remove check if sensor width exists for chan files
- tag nuke chan files to be pep8
- remove unused import

indentation edits and copy pyrimid from contrib (where I had made some edits), removed so this wont happen again.

version info is now located on the wiki page for the script/s

please keep descriptions short.

thanks to cotejrp1

Plus a few styling enhancements.

[[Split portion of a mixed commit.]]

Updated version & bl_info,
Added Authors to the base of gpl block as the list was too long.

wedge, sqorus, trapezohedron & star moved to this menu

* General Rule (for Ivygen and Sapling): If you need more code for declaring the layouts than for the props itself, something is wrong. ;-)
* if > elif

- remove/comment unused variables
- remove unused imports
- fixed some bugs using incorrect variables

* Modified the "Add X,Y,Z Function Surface" part:
* Changed how wrapping is done to avoid generating unnecessary vertices and make the result more intuitive.
* Added helper functions the results of which can be used in x(u,v), y(u,v), z(u,v).
* The script can now close the ends of an U-wrapped surface.
* It's now possible to create multiple objects with one set of formulae.

rearranged layout so everything is cleaner.

add mesh extras, gemstones, twisted torus, gears & 3d function surfaces
Now in folder add_mesh_extra_objects under 1 init file.