Fatal error: Class 'CommerceCieloLib' not found

I personally was unable to install the module without modifying the .install file. The error is: Fatal error: Class 'CommerceCieloLib' not found.
See other person w/ this issue: http://drupal-br.org/geral/anuncios/modulo-cielo-para-drupal-commerce#co...

This occurs because the CommerceCieloLib class that is included by the .info file:
files[] = includes/commerce_cielo.external.class.inc
is not instantiated during the hook_requirements "install" $phase.

I've attached a patch file for the change necessary to fix this on my system. Perhaps it's a user-error (ie. something I did wrong?) ?

I assume this is something only a few people encounter, and I am unsure why that is.