tests: create database with the utf-8 locale

Dependencies

• [2] 3HRBFWGK tests: change postgresql socket dir to /tmp
• [3] UQYHPQ6U Run PostgreSQL during "make check"
• [4] 7VQ4ALFY Update "make check" for the new queue runner

Change contents

• replacement in tests/set-up.pl at line 2
  [3.2013]→[3.231:273](∅→∅),[3.273]→[2.25:109](∅→∅),[2.109]→[3.348:405](∅→∅),[3.348]→[3.348:405](∅→∅)
  − system("initdb -D postgres") == 0 or die;

  − system("pg_ctl -D postgres -o \"-F -p 6433 -h '' -k /tmp \" -w start") == 0 or die;

  − system("createdb -p 6433 hydra-test-suite") == 0 or die;
  [3.2013]

  [3.2062]
  + system("initdb -D postgres --locale C.UTF-8 ") == 0 or die;

  + system("pg_ctl -D postgres -o \"-F -p 6433 -h '' -k /tmp \" -w start") == 0 or die;

  + system("createdb -l C.UTF-8 -p 6433 hydra-test-suite") == 0 or die;