Judgment of the Court of First Instance of 24 February 1994 in Case T-108/92: Giuseppe Caló v. Commission of the European Communities (Official — Procedure for filling vacancy by promotion or transfer — Qualifications required in the vacancy notice — Right to be heard — Infringement of Article 26 of the Staff Regulations — Consideration of the comparative merits of the candidates — Statement of reasons for the decision rejecting a candidature)