MADRID, Sept 8 (Reuters) - Spain's football federation has unveiled an agreement to support fertility treatment for female players and referees, presenting the measure as another way to give women in elite football greater freedom to decide ‌if and when to become mothers. The Royal Spanish Football Federation (RFEF) said on Tuesday its agreement with the Tambre clinic would ‌allow sportswomen to access treatments including in vitro fertilisation and egg freezing, in what the federation called a