Using a bit more flexible way to handle those values (range now from 10^-18 (20) to 10^2 (0) frames). Not sure we shouldn't rather get rid of such "magic" value and let user set frame threshold directly, though!

only one armature source will can be taken at the moment, and will taken in the following "priority" order:
1. armature parent will be taken if exist.
2. first available armature modifier will be taken if exist.

open question: what is best practice, in case of existence of multiple armature sources?
(armature parent and one or more armature modifier)
can that case happen (very often) in real world mesh modeling?

add check for reading ascii fbx files, was common annoyance that users are unaware that they try to import ascii files.

workaround for exception adding in editmode, for now setting vertex groups is unsupported in editmode.
support could be added through bmesh.

Also show MOTD received from the server.

Various cleanups and small fixes.

from Norbert Nopper (mcnopper), with some of my own edits.

- Improved light export
- Improved camera export
- Improved material export
- Improved mesh export. faces can now be either flat or smooth.

from Thomas Schiex (treepleks)

Update to OBJ exporter: now you can choose wether to export smooth groups IDs as simple values or as bitflags.

*Commented out a property that was not yet implemented in exporter
*Added frame number export for hand made pov animation
Thanks to a patch made by Markku Myllymäki

Added Subsurface passes to be taken into account in addon's operators.

undo the workaround of my previous commit for "[#36443] Vertex to UV index doesn't match with 2.68a", because that issue is fixed in blender 2.68a r59343 now.

- deleted not needed workaround for issue [#36443], because it is fixed in blender 2.68a r59343,
- added BMEdge generation to the importer (only for nice doing),
- added undo to operators,
- deleted some unused strings,

MHX importer: Tested with Blender 2.68a. Better FK/IK snapping, which however only works with mhx rig in MH svn.

- r3954/patch [#32914], introduced incorrect displacement map name, corrected.
- added support for reading displacement maps.
- remove checks that added alpha support for diffuce images, OBJ has alpha material settings for this.