The individual in international law — In general — Human rights and freedoms — Right to marry and found a family — Right to protection for family life — Obligation of State not to discriminate on grounds of sex — Alien men married to Mauritian nationals not entitled to reside in Mauritius as of right — No such restriction imposed on alien wives of Mauritian men — Whether discrimination against Mauritian women — International Covenant on Civil and Political Rights — Optional Protocol — U.N. Human Rights Committee — Communications by alleged victims of violations of the Covenant — Definition of victim — Whether individual not personally affected entitled to complain that legislation violates Covenant — Actio popularis