enhance the integration by using also giac and sympy #27958
Description
CC: @mwageringel @sagetrac-jakobkroeker @kcrisman @pjbruin @rwst @seblabbe @slel @sagetrac-tmonteil @videlec @vinklein @zimmermann6 @mforets @mezzarobba
Component: symbolics
Keywords: integration
Author: Frédéric Chapoton
Branch: d4371e3
Reviewer: Thierry Monteil
Issue created by migration from https://trac.sagemath.org/ticket/27958