MADRID (Reuters) - Spain is doing everything possible to control Islamic radicalism in its prisons, Interior Minister Jose Antonio Alonso said on Sunday, after a top judge said Spanish jails were a recruitment ground for militants. Spain's foremost investigative judge Baltasar Garzon ordered the arrest last week of 13 suspected members of a radical Muslim group, "the Martyrs of Morocco," formed largely from the fast-growing North African population of Spain's prisons. In his warrant, Garzon said the group, including 18 others arrested in mid-October, planned to blow up the High Court where Garzon is investigating Islamic militancy and another judge...