sagemath review request

[Paulo César Pereira de Andrade]

https://bugzilla.redhat.com/show_bug.cgi?id=877651

Took a bit more than 6 months working on it from time
to time in my free time... While I am not still fully happy
with it, I believe it is close to (if not already) good enough
to have it in the distribution.

Thanks,
Paulo