[Cin] Updated AppImage's and Manuals

[mnieuw at zap.a2000.nl]

@Andrea, I have this error when I run the i386 image on a 64 bit Mint 20.2 
(required installing lib32z1 first, so far, I have not yet done 32 bit testing on this Mint 20.2 partition). 

MatN

On Sun, 1 Aug 2021 13:21:56 +0200
Andrea paz via Cin <cin at lists.cinelerra-gg.org> wrote:

> The new AppImage does not start on Arch and gives the following error:
> 
> dlopen(): error loading libfuse.so.2
> AppImages require FUSE to run.
> You might still be able to extract the contents of this AppImage
> if you run it with the --appimage-extract option.
> See https://github.com/AppImage/AppImageKit/wiki/FUSE
> for more information
> 
> 
> I use fuse2 which contains usr/lib/libfuse.so.2 and
> usr/lib/libfuse.so.2.9.9. I can also install fuse3 but it is
> incompatible with fuse2 and has different libraries.