Bug#683046: Thumbnailer is not registered automatically

[IRIE Shinsuke]

Package: blender
Version: 2.63a-1

blender-thumbnailer.py is installed in /usr/bin, but not working
unless we manually register it by creating .thumbnailer file in
~/.local/share/thumbnailers.

I think deb package should make system-wide setting for it, so please
install /usr/share/thumbnailers/blender.thumnailer as follows:

================================ START ===============================
[Thumbnailer Entry]
TryExec=blender-thumbnailer.py
Exec=blender-thumbnailer.py %u %o
MimeType=application/x-blender;
================================ E N D ===============================

-- 
IRIE Shinsuke