Bug#836599: forwarded upstream

[Ghislain Vaillant]

control: forwarded -1 https://github.com/Shark-ML/Shark/issues/112

Forwarded upstream. Not sure whether this package was intended to work
on these architectures, so upstream might just not care about this.

I'll wait for their reply. The options are:
- Upstream fixes it hopefully.
- Disable testing for mips / mipsel in d/rules.
- Drop shark from the archive for mips / mipsel.

Feel free to comment. Thanks again for the report Emilio.

Ghis