[Clipart] Use 7Zip for the Open Cliparts distribution

[Daniel Carrera]

Bryce Harrington wrote:
> The considerations that need to be made are:
> 
>    * Can this type of file be generated on Linux (since we do our
>      packaging via Linux)

7-Zip itself is a Windows-only program. There has been work on a 
command-line version that could run on Linux-Intel (but I couldn't get 
it to work last time).

>    * Is this format sufficiently widespread to be of actual use?
>      (Too many options can make things more confusing for users)

Sadly, it isn't. Even if you got the Linux version working, it would be 
tied to x86. The design of 7-Zip depends on the CPU being little-endian, 
so it would exclude PPC and Sparc, and with it Mac OS X, Solaris, and 
Yellow Dog Linux.

But even on x86-Linux, 7-Zip is far from widespread because the command 
line utility hasn't been forthcomming (last time I checked).

This is sad because LZMA compression is very good.

Cheers,
Daniel.