support for loading DXF's with thumbnails (just skip them)

-reverted previous changes to matrix*vector order (sorry, didn't realize changes in rev.2180)

- Explicit construction of matrices is now via a list of rows not of columns
- Use Matrix.Rotation() instead of manual creation of the rotation matrix
- Use Matrix() instead of manual creation of 4x4 identity matrix

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

Beware: in mocap/__init__.py there was a very long bl_label (> 100 chars), which was troncated in UI (at least, _update_msg.py produced a troncated msgid for it). That should be avoided, imho!

- fixed Blender version number and URL to bugtracker

Adding UNDO flag to import operators. Made this only for trunk addons.

- remove unused imports
- remove/comment unused vars
- fix for some bugs with unused vars being used

- changed support level to OFFICIAL
- fixed missing last point at building Mesh-ARCs (by pildanovak)
- fixed for changes in API and mathutils by campbell

- modified for latest API in rev.34300

READ THIS TO AVOID A LOT OF WORK!

New way of linking to tracker pages: just use the parameter "aid" (artifact ID),
to avoid a lot of manual updates later in wiki and svn.

Example:
=========

OLD WAY TO LINK TO TRACKER
-----------------------------

Complete url of a script in Upload
http://projects.blender.org/tracker/index.php?func=detail&aid=25349&group_id=153&atid=467

If we move this in contrib this url will become
http://projects.blender.org/tracker/index.php?func=detail&aid=25349&group_id=153&atid=468
467 becomes 468, so we have to update this in wiki page.

Later on, when this moves into Trunk, the url will become
http://projects.blender.org/tracker/index.php?func=detail&aid=25349&group_id=153&atid=469
468 becomes 469, so we have to update the url in wiki page and svn.

Annoying!

NEW WAY TO LINK TO TRACKER
-----------------------------

Best way to link to tracker page is using:
http://projects.blender.org/tracker/index.php?func=detail&aid=25349

Use "func=detail"
Use "aid"            (which is the "artifact ID")

DON'T use "group_id" (which is the project ID, bf-extensions is project 153)
DON'T use "atid"     (which is the "artifacts tracker ID")

Like this, the url is unique, and we will avoid to update wiki pages and svn after moving pages
 


[[Split portion of a mixed commit.]]

- removed the version in contrib, has been left by mistake
- formatted the version in trunk to have the main docstring after bl_addon_info
- formatted bl_addon_info itself


[[Split portion of a mixed commit.]]