“Is the ruling of the Court of Justice of24 March 1987 in case 286/85 [McDermott and Cotter] … to be understood as meaning that in a claim before a national court or tribunal made in purported reliance on Article 4(1) of … Directive [79/7/EEC] by a married woman for equal treatment and for compensatory payments in respect of discrimination alleged to have been suffered by reason of the failure to apply to her the rules applicable to men in the same situation, it is contrary to the general principles of Community law for the relevant authorities of a Member State to rely upon national procedural rules, in particular rules relating to time limits, in bringing claims in defence of that claim such as to restrict or refuse such compensation?”