Release GCompris 0.81

[Bruno Friedmann]

Hello, back from SUSECon, I would like to refresh the openSUSE packages with 
this new version.

I'have seen this in changelog 

On mardi, 26 septembre 2017 22.48:15 h CEST Timothée Giet wrote:
> # Add a new minimal version with software rendering (requires Qt 5.8)

And I wonder I wonder if this statement means we need to have a Qt5.8 for this 
version ?

For example for openSUSE Leap I've Qt5.6 only available, or this new 
requirement is only to have the software rendering.

Also, did the sw_rendering need a the no opengl flag at compile time
or it will be able to grab it on startup (like no opengl, use sw_render) ?



-- 

Bruno Friedmann 
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