fix tap test for vpath builds

    

Attachment (pgbench-seed-12.patch) at 2018-03-24 09:18:32 from Fabien COELHO <coelho at cri.ensmp.fr> (Patch: Yes)
    Attachment (pgbench-seed-11.patch) at 2018-03-22 07:40:29 from Fabien COELHO <coelho at cri.ensmp.fr> (Patch: Yes)
    Attachment (pgbench-seed-10.patch) at 2018-03-16 13:58:19 from Fabien COELHO <coelho at cri.ensmp.fr> (Patch: Yes)
    Attachment (pgbench-seed-9.patch) at 2018-03-05 12:01:39 from Fabien COELHO <coelho at cri.ensmp.fr> (Patch: Yes)
    Attachment (pgbench-seed-8.patch) at 2018-01-24 09:33:10 from Fabien COELHO <coelho at cri.ensmp.fr> (Patch: Yes)
    Attachment (pgbench-seed-7.patch) at 2018-01-18 22:29:59 from Fabien COELHO <coelho at cri.ensmp.fr> (Patch: Yes)
    Attachment (pgbench-seed-6.patch) at 2018-01-10 12:27:19 from Fabien COELHO <coelho at cri.ensmp.fr> (Patch: Yes)
    Attachment (pgbench-vpath-2.patch) at 2018-01-10 10:00:24 from Fabien COELHO <coelho at cri.ensmp.fr> (Patch: Yes)
    Attachment (pgbench-seed-5.patch) at 2018-01-09 13:42:31 from Fabien COELHO <coelho at cri.ensmp.fr> (Patch: Yes)
    Attachment (pgbench-TAP-VPATH-1.patch) at 2018-01-09 08:59:42 from Chapman Flack <chap at anastigmatix.net> (Patch: Yes)
    Attachment (pgbench-seed-3.patch) at 2018-01-02 10:57:35 from Fabien COELHO <coelho at cri.ensmp.fr> (Patch: Yes)
    Attachment (pgbench-seed-2.patch) at 2018-01-02 09:48:24 from Fabien COELHO <coelho at cri.ensmp.fr> (Patch: Yes)
    Attachment (pgbench-seed-1.patch) at 2016-04-07 14:26:43 from Fabien COELHO <coelho at cri.ensmp.fr> (Patch: Yes)