Squashed commit of the following:

commit 78288193813ff8cd4e385ed978e43446288cf4b9
Author: Francisco <francisco@eneas.(none)>
Date:   Mon Dec 22 14:04:32 2014 -0300

> Subroutines matmulnano and matmulnanoc replaced by function
  basechange inside the mathsubs module.

&OLDER